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chuckisduck
Site Supporter
Location: Lynnwood Joined: Sat Nov 28, 2020 Posts: 772
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I want to build an 22 Upper using the CMMG drop in BGC, a 1:8 twist barrel , carbine length and a 22 suppressor at the end. The goal is to have a gun that is really easy to introduce someone to shooting.
I think it is all pretty good except for 2 things. -1:8 twist is hard on 22 -Fouling of gas line
Does anyone know if a 1:16 barrel exists without a gas port (I don't think the CMMG needs gas cycling) but with the 223 chamber so the CMMG drop in will work?
If I am doing something wrong or have a better suggestion, please tell me.
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Sun Nov 29, 2020 1:35 pm |
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FrankJames
Site Supporter
Location: Everett Joined: Thu Sep 20, 2018 Posts: 207
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RightToBear.com (and CMMG) have a collar to adapt your conversion kit for use with a dedicated .22lr barrel. All .223 chambered barrels are going to have a gas port. Brownells has 5.56 retro A1 barrels that are 1-in-12".(They sell out quickly) I ended up just making a dedicated upper. If you find a .223 barrel with a slower twist please share it. Good Luck
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Sun Nov 29, 2020 2:29 pm |
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MadPick
Site Admin
Location: Renton, WA Joined: Sun Mar 13, 2011 Posts: 51919
Real Name: Steve
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chuckisduck wrote: The goal is to have a gun that is really easy to introduce someone to shooting. Nice! A .22 rifle is the perfect first gun for someone learning to shoot. chuckisduck wrote: I think it is all pretty good except for 2 things. -1:8 twist is hard on 22 -Fouling of gas line First, I'll say that if you want to build a dedicated .22 upper and that project interests you, then go for it. But . . . do you need to? I say no. I have a .22 conversion bolt/mags, and they work just fine. "-1:8 twist is hard on 22" What's that mean? Accuracy suffers? I'm doubtful that it's enough to matter for someone learning to shoot. "-Fouling of gas line" Again, I'm doubtful that this is a real problem, especially for the number of .22 rounds that will go through this gun. Before you put too much money into the upper, I'd consider a conversion bolt . . . but also look at how much a used M&P 15/22 or similar rifle will run you. Your money might be better spent on just buying a whole gun.
_________________SteveBenefactor Life Member, National Rifle AssociationLife Member, Second Amendment FoundationPatriot & Life Member, Gun Owners of AmericaLife Member, Citizens Committee for the Right to Keep and Bear ArmsLegal Action Supporter, Firearms Policy CoalitionMember, NAGR/NFGRPlease support the organizations that support all of us.Leave it cleaner than you found it.
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Sun Nov 29, 2020 2:36 pm |
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chuckisduck
Site Supporter
Location: Lynnwood Joined: Sat Nov 28, 2020 Posts: 772
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Thanks for the advice FJ & MP. This really came as a piecemeal idea and probably should of gotten a used M&P 22, but I think you would have to thread them usually or get an adapter they sell.
I agree that accuracy is not the issue at 25 yards for someone new. I am worried about splatter hitting the baffles in the can mainly. Probably OCD'n it.
I have a cheap infrared viewscreen and scope that makes it really easy to use, but worried that cleaning out the lead with 2-3 .223 rounds may be too much shock on the electronics.
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Sun Nov 29, 2020 3:09 pm |
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MadPick
Site Admin
Location: Renton, WA Joined: Sun Mar 13, 2011 Posts: 51919
Real Name: Steve
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The M&P 15/22 comes in both threaded and unthreaded versions.
_________________SteveBenefactor Life Member, National Rifle AssociationLife Member, Second Amendment FoundationPatriot & Life Member, Gun Owners of AmericaLife Member, Citizens Committee for the Right to Keep and Bear ArmsLegal Action Supporter, Firearms Policy CoalitionMember, NAGR/NFGRPlease support the organizations that support all of us.Leave it cleaner than you found it.
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Sun Nov 29, 2020 3:15 pm |
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MadPick
Site Admin
Location: Renton, WA Joined: Sun Mar 13, 2011 Posts: 51919
Real Name: Steve
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The M&P 15/22 comes in both threaded and unthreaded versions.
_________________SteveBenefactor Life Member, National Rifle AssociationLife Member, Second Amendment FoundationPatriot & Life Member, Gun Owners of AmericaLife Member, Citizens Committee for the Right to Keep and Bear ArmsLegal Action Supporter, Firearms Policy CoalitionMember, NAGR/NFGRPlease support the organizations that support all of us.Leave it cleaner than you found it.
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Sun Nov 29, 2020 3:15 pm |
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MadPick
Site Admin
Location: Renton, WA Joined: Sun Mar 13, 2011 Posts: 51919
Real Name: Steve
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On a related note, I have a Sig 522 that I sometimes use for teaching people . . . it works like a champ.
_________________SteveBenefactor Life Member, National Rifle AssociationLife Member, Second Amendment FoundationPatriot & Life Member, Gun Owners of AmericaLife Member, Citizens Committee for the Right to Keep and Bear ArmsLegal Action Supporter, Firearms Policy CoalitionMember, NAGR/NFGRPlease support the organizations that support all of us.Leave it cleaner than you found it.
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Sun Nov 29, 2020 3:16 pm |
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chuckisduck
Site Supporter
Location: Lynnwood Joined: Sat Nov 28, 2020 Posts: 772
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I think it will become a post-covid project (or just buying a 22 outright).
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Sun Nov 29, 2020 6:00 pm |
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Traut
Site Supporter
Location: Downtown Newcastle Joined: Sat Mar 5, 2016 Posts: 3440
Real Name: Traut
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FWIW - I started out using a CMMG conversion kit on my lefty Stag ..223/5.56 and it worked fine and was plenty accurate for all day gopher hunting to 50 yards. I eventually built a dedicated .22lr upper using CMMG's conversion bolt, barrel collar and barrel, all left hand. Ended up with a nice, lightweight, easy to maintain, accurate weapon that would be an excellent teaching platform. No gas block and tube or buffer and spring are required. Also, the folks at CMMG were really helpful. They have left hand stuff available, but it's not a steady part of their inventory. When I would call and talk to them they alway would go to extra effort to scrounge things up for me. From the front desk ladies to the techies, I always had very good service from them.
_________________ I always thought growing old would take a lot longer.....
So, when does that "Old enough to know better" shit kick in??? I've learned that pleasing everyone is impossible, but pissing everyone off is a piece of cake.
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Sun Nov 29, 2020 7:11 pm |
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chuckisduck
Site Supporter
Location: Lynnwood Joined: Sat Nov 28, 2020 Posts: 772
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I ended up taking the ots route and bought a H&K 416 22.
The Upper minus the BCG/charging handle I bought off of Diamondback on their black friday special. I can cancel it also right now, but maybe someone here can have the savings. Will post it.
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Mon Nov 30, 2020 12:46 am |
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mendozer
Location: Seattle Joined: Wed Jan 6, 2016 Posts: 64
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Update on how that 416 is. Looks like a cool 22. Sportsmans has it for 400 so I'm curious to hear your feedback.
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Sun Dec 13, 2020 12:41 am |
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Rix86
Site Supporter
Location: Shelton Joined: Sun Nov 17, 2013 Posts: 5837
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I have a dedicated 22 upper, and am absolutely glad I do.
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Sun Dec 13, 2020 5:43 am |
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NWRed
Site Supporter
Location: Puyallup for now Joined: Tue May 24, 2011 Posts: 2095
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Sun Dec 13, 2020 12:19 pm |
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chich627
Site Supporter
Location: Seatac Joined: Thu Feb 2, 2012 Posts: 501
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Tue Dec 15, 2020 11:11 am |
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Unicorn
Joined: Tue Apr 19, 2011 Posts: 2597
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I picked up one of the Chiappa .22 uppers a few years ago and it's a fun gun. https://www.chiappafirearms.com/product ... php?id=206It uses the same mags as the CMMG conversion. You could get one of Brownells A1 retro barrels and if it's too long just cut it down and have it threaded. You don't have to worry about gas port size or location since the conversion is a blowback and doesn't use the gas. You could just not install a gas tube and plug the sight with epoxy to keep gas from blowing through. I think it's a 1/12, but might be a 1/14. They sell out pretty quickly though.
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Thu Jan 28, 2021 9:30 pm |
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