Mossberg 940 jm pro issues

The Optic-Ready 940 Pro Tactical autoloader joins the 940 family, loaded with features that enhance its durability, ease of operation and functionality. 940 Pro Tactical Optic-ready, with receiver cuts that accept low-profile direct mounting of Shield RMSc-pattern micro dot sights— for improved eye alignment and target acquisition

We would like to show you a description here but the site won't allow us.The 930 operates on a gas system, and I experienced no feeding or ejection issues despite heating up the guns with hundreds of rounds. Like most gas guns, the action also tamed recoil, which never proved to be an issue. ... The Mossberg 940 JM Pro Competition Shotgun First Look: The Mossberg 940 JM Pro Competition Shotgun. By: …Mossberg attempted this with the 930 JM Pro, but it didn’t meet some of those requirements. Also, there’s the issue of fit. Length of pull, drop at the comb, and cast are not easily changed on many …Took it apart and found a 37" (slightly kinked) spring. Reinsert the spring and got only 6 Federal Classic 00. Checked my JM Pro spring, and it is the same spring - 37"! For a 9 rd, much longer tube. Mossberg CS was helpful, but not well informed. They sent a new spring, so we'll see.This one's been discussed a bit; someone on BE gave me the heads up, on using a Ruger 10/22 spring to replace the Mossberg 930 hammer spring. Some JMs/930s exhibit a light strike at some point, with this spring being a slightly stronger, longer, thinner replacement. I've had few issues with my JM...

July 17, 2018 By RifleShooter Online Staff. O.F. Mossberg and Sons, Inc. announced the release of the JM Pro Adjustable Match Trigger, a drop-in adjustable precision trigger that is compatible with standard AR15 and AR10 rifles. Working with world-renowned, 3-Gun shooter, Jerry Miculek, Mossberg engineered the new JM Pro Adjustable Match ...Today's and tonight's Ciudad Juárez, Chihuahua, Mexico weather forecast, weather conditions and Doppler radar from The Weather Channel and Weather.comCopper BB. Nov 22, 2023. #1. This post is specific to the #85163 variant of the 940 Pro Tactical. I'm in Illinois and I'm limited to a 5 rounds or less on a semi-auto shotgun here. Anyway, not here to gripe about legislation, just trying to figure out a good setup for this gun. I know it'd be hilarious to reply with "move to any other state ...Jan 1, 2017 · 1. The trigger assembly and the bolt both need a good soaking in solvent, then a light lubrication afterward. 2. The firing pin return spring could be broken (or dirty). If broken, it needs replaced. Or, the firing pin itself could be corroded at the tip and might need replaced although I doubt it. 3. November 14, 2022 By Eric R. Poole. Mossberg’s 940 Pro Field is one of the models that evolved from the 2020 introduction of the 940 JM Pro. Designed in partnership with World Champion Jerry Miculek, the new 940 is a fast-cycling shotgun built to win competitions. The 940 gas system is a new design to speed up cycling and make it more reliable.Mossberg 940 JM Pro autoloaders were built to compete and win. Inside, you will find a new durable gas system that allows for up to 1500 rounds between cleaning, nickel boron-coated internal parts ...

These 940 JM Pro autoloaders were built to compete and win. Inside, you will find a new durable gas system that allows for up to 1500 rounds between cleaning, nickel boron-coated internal parts for smooth operation, and a competition-level loading port, elevator, and follower. Outside, an adjustable stock and streamlined forend sport Mossberg ...Mossberg Owners is in the process of upgrading the software. Please bear with us while we transition to the new look and new upgraded software.Mossberg 940 JM Pro. Jump to Latest Follow 5K views 1 reply 2 participants last post by SargeMO Jan 11, 2020. Y. Yellow Lab Discussion starter 227 posts · Joined 2003 Add to quote; Only show this user #1 · Jan 8, 2020. It appears an update to the Mossberg 930 JM Pro is out. ...Designed in conjunction with World Champion shooter Jerry Miculek, the Mossberg 940 JM Pro is feature-rich, fast-cycling, and ultra-competitive. These 940 JM Pro autoloaders were built to compete and win. Inside, you will find a durable gas system that allows for up to 1500 rounds between cleaning, nickel boron-coated internal parts for smooth ...This keeps cleaning to a minimum, allowing the gun to run more rounds without issue between cleanings. Mossberg itself put 1,500 rounds through the 940 JM Pro without experiencing issues. As far ...O.F. Mossberg & Sons, Inc. announced the introduction of a new 12-gauge autoloading shotgun platform; the 940 JM Pro, available in two 10-shot models. January 03, 2020 By G&A Digital Staff. The result of two years of development alongside world champion shooters, Jerry and Lena Miculek, the 940 JM Pro is designed to meet the needs of today's ...

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Below is the email I sent to Mossberg. Hoping some of y’all can guide me into a solution quicker then they can: Just received my 940 jm-pro for my first season of 3gun competition. Took it to my local skeet/trap club and having failure to eject issues. I was shooting the wobble stand. First position now problem. Ran 5 rounds through it cleanly.Here is a video review that I made with Jerry Miculek on the 940 Pro and 940 JM Pro. In short, my first shotgun was a Mossberg 500. Since that first gun I have shot a lot of different shotguns and I have not been to impressed with Mossberg shotguns. The 940 however, impressed me. Here is another video I made with the 940, shooting it super fast.These 940 JM Pro autoloaders were built to compete and win. Inside, you will find a new durable gas system that allows for up to 1500 rounds between cleaning, nickel boron-coated internal parts for smooth operation, and a competition-level loading port, elevator, and follower. Outside, an adjustable stock and streamlined forend sport Mossberg ...Announced earlier this month, the 940 JM Pro builds on the successful 930 model, but with a bevy of enhancements geared towards competitive shooting, namely 3-gun. Watch the video at the top of this article to see the incredible Miculek display his legendary speed shooting skills, as he unloads the 940 JM Pro in about a second.

I am having a problem with my new JM pro. During a three gun match I shot 73 rounds of shotgun shells. 60 of these shells were #7.5 birdshot, 10 were #9 bs and 3 were slugs (winchester, 2 3/4, 1oz 1600fps). All of the rounds fired and cycled correctly with the exception of the 3 slugs. When firing the slugs, the shotgun locked up with the bolt ... Below is the email I sent to Mossberg. Hoping some of y’all can guide me into a solution quicker then they can: Just received my 940 jm-pro for my first season of 3gun competition. Took it to my local skeet/trap club and having failure to eject issues. I was shooting the wobble stand. First position now problem. Ran 5 rounds through it cleanly. Mossberg 940 JM Pro autoloaders were built to compete and win. Inside, you will find a new durable gas system that allows for up to 1500 rounds between cleaning, nickel boron-coated internal parts ...If you've picked up a 940, you have a 930 with Mossberg-made OR3Gun parts and a modified SBE Precision piston. Necessary work: Polish inside the action spring tube. De-burr the action spring. Polish inside the mag tube. Polish the mag tube extension and chamfer the mouth where it transitions to the tube.Mossberg 930 JM Pro Failure to Feed. I am having issues with my Mossberg 930 which is only a couple months old. I have put ~500-600 rounds through it to break it in. The gun has no issues with feeding from the magazine tube, ejecting, ect, common problems with this model as I have read online. But quite frequently I will have …Regular maintenance and proper handling of your Mossberg 940 JM PRO can significantly reduce feeding issues, allowing you to enjoy a seamless shooting experience without interruptions. 3. Problem with the Safety Button & Its Solution. One common issue that Mossberg 940 JM PRO owners may encounter is a problem with the safety button.1 Oct 2020 ... Comments51 ; A Little Shotgun Maintenance. Jerry Miculek - Pro Shooter · 56K views ; My issues with the JM 940 PRO, and how you can avoid them!The 940 JM Pro addresses one of the most crucial aspects of 3-Gun competition, reloads. Mossberg decked out the gun with everything to juice it quickly, incorporating a large and beveled loading port, easily found and fed. This plays gateway to an ample full-length magazine that holds a whopping nine 2 ¾-inch shells, yet does not extend past ...Feb 28, 2021 · A popular gun with a very popular name behind it but does the Mossberg 940 JM PRO live up to the name Jerry Miculek and should you buy one?Support the Channe... Mossberg 940 JM Pro Semi Automatic Shotgun Specifications and Features: Mossberg 85111; Redesigned Gas System, Semi Automatic Operation; 12 Gauge; ... Great shotgun! I just put about 150 rounds thru it last weekend shooting clays and didn’t have any issues. Smooth operations thru out the session. Chris W on 03/04/2024. Rating: ...MOSSBERG. 500 TACTICAL. NEW. $658.99. Targeting hunters who thrive on high-volume shooting and dream of an unlimited round count to take on clouds of show geese, the 12-gauge Mossberg 940 Pro Snow ...

The OR3GUN Marine Spacer Tube ™ (MST-930) for Mossberg 930/935 series shotguns is a major enhancement to the reliable function of your firearm in all weather conditions. For years, competition shooters like ourselves have battled seemingly random cycling malfunctions with the gas systems in Mossberg's 930 series.

The Mossberg 940 JM Pro first debuted back in 2020 to much fanfare. Designed with input from the legendary Jerry Miculek, the 940 JM Pro comes competition-ready right out of the box. Now the line gets an update with three new optics-ready models fitted for direct mounting of Shield RMSc-footprint micro red dot sights. Mossber 940 JM Pro Optics ...In this video we review the Mossberg 940 JM PRO Shotgun. It is an impressive competition shotgun for sure.Disclaimer: These videos are strictly for education...Incontinence can be embarrassing, but it's not something that should be ignored. Dr Sarah Jarvis discusses pelvic floors and the issues they can raise. Try our Symptom Checker Got ...Mossberg 940 JM Pro. Jump to Latest Follow 5K views 1 reply 2 participants last post by SargeMO Jan 11, 2020. Y. Yellow Lab Discussion starter 227 posts · Joined 2003 Add to quote; Only show this user #1 · Jan 8, 2020. It appears an update to the Mossberg 930 JM Pro is out. ...MOSSBERG 940 PRO JM FEATURES. Designed in conjunction with World Champion shooter Jerry Miculek, the new Mossberg 940 Pro JM is feature-rich, fast-cycling, and ultra-competitive. These Mossberg 940 Pro JM autoloaders were built to compete and win.Inside, you will find a new durable gas system that allows for up to 1500 rounds between cleaning, nickel boron-coated internal parts for smooth ...These 940 JM Pro autoloaders were built to compete and win. Inside, you will find a new durable gas system that allows for up to 1500 rounds between cleaning, nickel boron-coated internal parts for smooth operation, and a competition-level loading port, elevator, and follower. Outside, an adjustable stock and streamlined forend sport Mossberg ...Mossberg 940 JM Pro autoloaders were built to compete and win. Inside, you will find a new durable gas system that allows for up to 1500 rounds between cleaning, nickel boron-coated internal parts ...The 930 has a lot of problems and aren't generally reliable without some work and aftermarket parts. Even Jerry Miculek says they're just like that, some run, …22 Nov 2022 ... Big Tone opens up his brand new Mossberg JM 940 Pro 12GA and shows you in real time what it can do on the trap rage.

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New for 2020! -- Designed in conjunction with world champion @MiculekDotCom, the 940 JM Pro is feature-rich and competition-ready straight out of the box. New for 2020! -- Designed in conjunction ...The spring I recieved is marked "940 JM Pro". Yup, it's 37". I (eventually) got the new spring situated and proceeded to load the mag with 2 3/4 00 Federal - 5 rounds. ... I had to send my shotgun back to Mossberg though because I ran into issues with the blemish and the bolt release wouldn't work to unload the shotgun properly. I guess I'll ...In essence, the 940 JM Pro is a gas-operated semi-automatic that holds 9 plus 1 rounds thanks to its included magazine tube extension. The gas system was redesigned and the internal parts were ...The result was the Mossberg 940 JM Pro competition shotgun they released in 2020. Interestingly, they did not initially market the 940 JM Pro to the hunting and shooting communities at large. ... It's a minor issue to be sure and may be unique to this particular shotgun. In fact, I was able to replicate it a couple of times, but the problem ...Having had excellent reliability from our Mossberg 930 Field/Security Combo, I added a 22" 930 JM Pro. I selected the 22" version with the intention of removing the magazine extension and restoring it to field length for the hunting seasons. I had a Remington 870 Special Purpose for awhile and I find these 21-22 inch guns about perfect, in ...If you've picked up a 940, you have a 930 with Mossberg-made OR3Gun parts and a modified SBE Precision piston. Necessary work: Polish inside the action spring tube. De-burr the action spring. Polish inside the mag tube. Polish the mag tube extension and chamfer the mouth where it transitions to the tube.The Mossberg 930 JM Pro has been fix by TheReloaderDude. Cycle Problem have been fixedGood ergonomics. Pricey compared to pump-actions. Editor's Note: "The Mossberg 940 Pro Tactical is an evolution stemming from feedback from pro shooters like Jerry Miculek as well as shooters like us who buy and modify guns. All the improvements make sense, and the gun's performance is outstanding.". - Sean Curtis.The GG&G one piece Mossberg 940 PRO Scope Mount is an easy but super solid scope mount for your tactical scope. It mounts directly to the factory drilled and tapped receiver of your Mossberg 940 PRO shotgun. Low profile, CNC machined Mil-Std 1913 dovetail, manufactured from billet 6061T6 aluminum, Mil-Spec anodizing, Torx head mounting screws ... ….

SKU. 96010. Notify me when this product is in stock. $196.00. Details. Designed in conjunction with legendary champion Jerry Miculek, the JM Pro Match Trigger is a great replacement trigger for stock units. This drop-in trigger is factory-set at a pull weight of 4 pounds, and offers a crisp, creep-free break and user-adjustable overtravel.O.F. Mossberg & Sons, Inc., a leading American firearms manufacturer, announced today the introduction of a new 12-gauge autoloading shotgun platform; the 940 JM Pro™, available in two 10-shot models. The result of two years of development alongside world champion shooters, Jerry and Lena Miculek, the 940 JM Pro is designed to meet the needs ...The Mossberg 930 JM Pro has been fix by TheReloaderDude. Cycle Problem have been fixedJan 30, 2024. #1. All, I consider myself lucky enough to have obtained a Mossberg 940 JM PRO here in CA. They are scarce (like proverbial hen's teeth) here. This is the the model that is 9 (+1) for a total of 10 ready to go. Will do some range testing soon and report the results. I had to contact Mossberg for the missing choke tubes and manual ...Oct 2, 2023. #26. Recently, I was able to track down a new Mossberg 940 Pro Tactical and Remington V3 Tactical to purchase for HD and range use: These will be stripped down and lubed up before I hit the range with them for a break-in w/ 00 buck, slugs, and even the cheap-o "Brand-X" birdshot).1. Jamming Issues. Alright, let’s kick things off with the jamming issue. When I took this shotgun out to the field, it was all fun and games until a jam. The bolt wouldn’t return to its starting position, making it impossible to fire another round. It didn’t …Mossberg 940 JM Pro. MSRP $ 1,015.00. Compare. Designed in conjunction with World Champion shooter Jerry Miculek, the new 940 JM Pro is feature-rich, fast-cycling, and ultra-competitive. View All Variations | Buy Pricing Report. Shop at GunBroker.com. GSIN: MSSBR-QSLACLPG. Firearm SpecificationsThe Mossberg 940 Pro Tactical perfectly melds the capability and reliability of the semi-automatic, competition-focused 940 JM Pro that it uses as its foundation. It's also coupled with the dependability of the historic 500 series pump shotgun that Mossberg is known for. The first thing one notices upon picking the gun up is its balance and ...This instructional video shows an in-depth look at how to perform essential servicing and cleaning procedures on the Mossberg 940 platform shotgun....Jump to...Mossberg 940 JM Pro 24" Black er en konkurrenceklar halvautomatisk haglgevær, designet i samarbejde med verdensmesteren Jerry Miculek. Den er skræddersyet til dynamisk skydning med dens forbedrede gas system, forstørret ladningsport og forlænget magasin. Denne model, med sin matte blå løbsfinish og sort polymerstok, er en fusion af ydeevne og stil. Mossberg 940 jm pro issues, Top 4 Mossberg 940 Pro Turkey Problems & Solutions. 1. Barrel Issue. So, let's talk about the barrel issue. During my time in the field, I noticed that the barrel tended to get hot pretty quickly, especially after consecutive shots. This could potentially affect your aim and make your shooting experience less enjoyable., Online Firearm Orders. Select firearms are able to be ordered online and shipped to your local Cabela's! More Info. You don't need a gunsmith to craft a competition-worthy autoloader. With design help from legendary competitive shooter Jerry Miculek, the Mossberg® 940® JM Pro 5-Shot Semi-Auto Shotgun offers..., Regular maintenance and proper handling of your Mossberg 940 JM PRO can significantly reduce feeding issues, allowing you to enjoy a seamless shooting experience without interruptions. 3. Problem with the Safety Button & Its Solution. One common issue that Mossberg 940 JM PRO owners may encounter is a problem with the safety button., MOSSBERG 940 JM PRO 12 Gauge 24in Matte Blue 9rd - $719.99 Item Number: 149812 Mossberg 940™ JM Pro 12 Gauge A winner… right out-of-the-box. Designed in conjunction with World Champion shooter Jerry Miculek, the new 940 JM Pro is feature-rich, fast-cycling, and ultra-competitive. Competition-Ready, Mossberg 940 JM Pro autoloaders were built to compete and win. Inside, you will find a new durable gas system that allows for up to 1500 rounds between cleaning, nickel boron-coated internal parts ..., Looking for reviews from mossberg 940 owners (any 940 model). Is it really an unreliable “jam” pro like some people say it is? ... I have the 940 jm pro. It cycles light target loads like a champ, no problems after about 500 rounds. Earlier on I tried some federal 00 buck and it jammed twice in the first 50rd. Cleaning and maintenance is ..., Search the Guns.com database to shop for guns, ammo, mags, optics and more. Filter products to compare by specs and price. New and certified used handguns, shotguns, rifles..., The complete Mossberg 940 Pro line is now shipping and available in a variety of models and finishes including the JM Pro, Pro Field, Pro Waterfowl (tested), and Pro Snow Goose. The 940 Pro Waterfowl is a joy to shoot and has no problem pushing shells as the birds continue to pile up. (Photo By: Chris Ingram), Manufacturer: Mossberg Model: 940 JM Pro Semi-Automatic SKU: 85113 Gauge: 12 Gauge Capacity: 9 + 1 Rounds Chamber: 3" Barrel: 24" Vent Rib, Matte Blued Choke: Briley Ext Set Stock: Adj. LOP, Cast, Drop - Synthetic (Multicam) Length of Pull: 13" - 14.25" Overall Length: 44.75" Sights: Front Fiber Optic Weight: 7.75 lbs, Mossberg 930 JM Pro Series features fast cycling gas system; ... Mossberg 940 Jm Pro; MOSSBERG 940 JM PRO. 7. MOSSBERG 940 JM PRO. 7. SKU 85111. new. Our Price. $999.99 In stock. Starting at 0% ..., 940 Pro Turkey. 5-Shot. 12 Gauge. Updated, cleaner running gas vent system for reliable cycling. Self-draining stock; adjustable for length-of-pull and Drop at Comb/Heel. Enlarged, beveled loading port with a quick-empty magazine release button for easy unloading. Drilled & tapped Receivers. Select up to 3 models to compare Compare up to 2 models., The Top Gun for 3-Gun - Now Comes Optic-Ready. Patent-pending receiver cuts and a removeable cover plate allow direct mounting of Shield RMSc-pattern micro dot sights, for improved eye alignment and faster target aquisiton. Inside every 940 JM Pro, you will also find a new durable gas system, specially-coated or finished internal parts for smooth operation, and a competition-level loading port ..., Even a competition shotgun, like the new Mossberg 940 JM Pro, is a step up from granddad’s 28-inch dove gun in a defensive role. The 22- to 24-inch barrel that you find on most competitive shotguns makes moving inside a structure harder, should you be forced to leave the safety of your barricaded position., 940 Pro Turkey. 5-Shot. 12 Gauge. Updated, cleaner running gas vent system for reliable cycling. Self-draining stock; adjustable for length-of-pull and Drop at Comb/Heel. Enlarged, beveled loading port with a quick-empty magazine release button for easy unloading. Drilled & tapped Receivers. Select up to 3 models to compare Compare up to 2 models., Mossberg JM 940 Pro. Any of y’all have experience with the “competitive” Mossberg JM 940 Pro? I have heard mixed reviews on it (I realize it’s better than the 930 and its problems). My local gun shop is doing a sale on stuff and they marked this for 799. This would be more of a fun clay gun than anything., Mossberg 940 JM Pro - Aftermarket Support. Hi Reddit, I picked up a 940 JM Pro (disclaimer: I live in NJ so I had to pick up the 5+1 version, model 85143) about 6 months ago. I’ve had no issues at all with it so far (750 rounds of birdshot, buckshot, and slugs) and I really enjoy shooting it, but I’m looking to make some modifications to it ..., The new design of the 940 competition-ready loading port and several related components is the most aggressive factory offering available to speed reloads. Lena demonstrated that the 940 JM PRO design could be quad loaded in the fashion used by many 3-gun competitors. That’s holding 4 shells in your hand and feeding them in two at …, Mossberg 940 - Complete Cleaning and Disassembly with Jerry Miculek. 1 Min Read. By Mossberg. This instructional video shows an in-depth look at how to perform essential servicing and cleaning procedures on the Mossberg 940 platform shotgun. Mossberg 940 Cleaning by Jerry and Lena Miculek. Watch on., 1. Jamming Issues & Its Solution. Jamming issues can be frustrating for any Mossberg 940 JM PRO owner. When your shotgun fails to cycle properly, it can disrupt your shooting experience and hinder your performance on the range or in competitions. One common cause of jamming is using low-quality or improperly sized ammunition., Update: 940 jm pro came back from the factory after cycling issues. Now! With trigger and safety issues! Mossberg factory replaced my piston, elevator, and o..., , The Mossberg 940 JM Pro 12 Gauge Shotgun is a competition-ready shotgun designed for high-level performance in shooting sports. Here are some of its features: Action: The shotgun features a gas-operated system that reduces recoil and allows for quick follow-up shots., The comp pro is hard to find right now but is $1400-1500. Either one is going to be a much better choice than the mossberg. The 1301 is a very reliable gun, the 930 has not proven to be and the 940 is to new to have much of a track record so I'd go with the 1301. I've run a 1301 comp for years., 940 jm pro The one that started them all: the 940 JM Pro. Designed in conjunction with World Champion shooter Jerry Miculek, the 940 JM Pro is feature-rich, built with specs to give competitive shooters the edge they need to end up on the medal podium., Jun 6, 2022 · Hey man, I got the pro tactical and exact same issue with loading and the ridiculous. Length of the spring. Mossberg sent me a replacement spring and it was the exact same length. But if you look at the exploded parts view of the 940 Pro versus the 940 Pro tactical within the same manual, there's obviously two different springs shown in the ... , Buy Mossberg 940 JM Pro 12 Gauge 24" Barrel 3" Chamber /9+1/: GunBroker is the largest seller of Semi Auto Shotguns Shotguns Guns & Firearms All: 960736885. Advanced ... Please specify "Data Issue with UPC on Item #960736885" in the subject line. No Longer Available., 940 JM Pro magvtube nut is different than 940 tactical magazine nut. ... I've heard that these mods as well as Nordic's mag spring will correct any future issues these 940's seem to be having. I literally just got this gun back from Mossberg after it jammed with the receiver bolt locked shut. Elevator was replaced., I have had both a 940 tactical and a 930 tactical, and gave up completely on Mossberg auto loader shotguns. If you want one for bear protection, or any other application where you need reliability, get a Beretta 1301., O.F. Mossberg & Sons is bringing the popular Jerry Miculek-inspired 940 JM Pro platform to the hunting market with the introduction of two waterfowl-dedicated 12-gauge semi-automatic shotguns—the 940 Pro Waterfowl and the 940 Pro Snow Goose, featuring Cerakote metal surfaces, chrome-lined barrels, HIVIZ TriComp sights and camo-finished stocks and fore-ends., The first 940 was the JM Pro, a dedicated race gun. Recognizing that waterfowlers, too, would appreciate the improvements in reliability found in the 940 JM Pro, Mossberg added a 940 Pro Waterfowl ..., If the 940 JM Pro, like all extended magazine shotguns, has one weak link, this is it. You see, a nine-round magazine requires a thin spring approximately 34" long. Springs eventually weaken..., 26 Oct 2023 ... JOIN THE FIGHT: https://donate.gunowners.org/ga01/ In this video, Eric demos the updated @MossbergCorp 940 in the "Pro Tactical" factory ..., If you've picked up a 940, you have a 930 with Mossberg-made OR3Gun parts and a modified SBE Precision piston. Necessary work: Polish inside the action spring tube. De-burr the action spring. Polish inside the mag tube. Polish the mag tube extension and chamfer the mouth where it transitions to the tube.