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Posted: 5/11/2022 3:55:31 PM EDT
[#1]
Cmmg or right to bear
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Posted: 5/11/2022 4:11:51 PM EDT
[#2]
Quote HistoryQuoted: Cmmg or right to bear So this KIT is gtg? Apart from magazines and ammo, is there anything else that you would recommend with it? |
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Posted: 5/11/2022 4:24:09 PM EDT
[#3]
Quote HistoryQuoted: Cmmg or right to bear Yep, that right there. Bummer they jacked the price way up..cheaper to just buy a completed upper now. |
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Posted: 5/11/2022 4:41:41 PM EDT
[#4]
Apologies for high jacking the thread, does the CMMG & RTB .22 Bolt Groups use the same type of magazines?
Are the magazines compatible with both conversion units? |
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Posted: 5/11/2022 5:04:30 PM EDT
[#5]
Quote HistoryQuoted: Apologies for high jacking the thread, does the CMMG & RTB .22 Bolt Groups use the same type of magazines? Are the magazines compatible with both conversion units? Yes, CMMG and RTB are same same on it all. |
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Posted: 5/11/2022 6:06:54 PM EDT
[#6]
I used the Bonnie Packer mag adaptor so I can use 15-22 mags. Cheaper than the CMMG and easier to find.
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Posted: 5/11/2022 6:22:03 PM EDT
[#7]
Do I need to keep the buffer and buffer spring in order to use these kits?
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Posted: 5/11/2022 6:38:19 PM EDT
[#8]
Quote HistoryQuoted: Do I need to keep the buffer and buffer spring in order to use these kits? I have a CMMG kit with an AGP folding stock as a dedicated.22 SBR. No spring or buffer required.  Attached File Attached File |
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Posted: 5/11/2022 6:42:49 PM EDT
[#9]
Quote HistoryQuoted: I have a CMMG kit with an AGP folding stock as a dedicated.22 SBR. No spring or buffer required. https://www.ar15.com/media/mediaFiles/2158/9D47D8C6-A1ED-402F-B53B-E2BCDD7EDE44_jpe-2380311.JPGhttps://www.ar15.com/media/mediaFiles/2158/4CDC589D-5064-45D4-BCA0-A47558F3E976_jpe-2380312.JPG That’s cool! |
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Posted: 5/11/2022 7:33:20 PM EDT
[#10]
you can also use these mags
https://www.blackdogmachinellc.net/AR15.22PRODUCTS.aspx |
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Posted: 5/11/2022 7:52:54 PM EDT
[#11]
Take it apart and smooth/polish the rails that the bolt rides on. All of mine have worked flawlessly after polishing.
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Posted: 5/12/2022 10:39:12 AM EDT
[#12]
Quote HistoryQuoted: Take it apart and smooth/polish the rails that the bolt rides on. All of mine have worked flawlessly after polishing. I did that on the first several that I bought (beginning in April, 2010) as the milling marks were rather prominent. I would also smooth out the feed ramp on the chamber adapter with a whet stone. But the last conversion that I bought (October, 2018) was markedly more smoothly milled, and it has worked perfectly with no added touches on my part. MHO, YMMV, etc. Be well. |
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Posted: 5/12/2022 11:16:53 AM EDT
[#13]
Quote HistoryQuoted: That’s cool! Quote HistoryQuoted: Quoted: I have a CMMG kit with an AGP folding stock as a dedicated.22 SBR. No spring or buffer required. https://www.ar15.com/media/mediaFiles/2158/9D47D8C6-A1ED-402F-B53B-E2BCDD7EDE44_jpe-2380311.JPGhttps://www.ar15.com/media/mediaFiles/2158/4CDC589D-5064-45D4-BCA0-A47558F3E976_jpe-2380312.JPG That’s cool! Thanks. I use the better mag/ready mag adapter, so I can use Smith and Wesson mags. And I also use a McFadden Mag loader to avoid rim lock, and I can’t say enough about this mag loader! Mine does not have a buffer tube spring and buffer, but it does have a little hex nut that puts forward pressure on the CMMG 22 kit to keep it in place. Others who have buffers and Springs often use a plug of some sort to put extra pressure forward on the CMMG kit to keep it from moving as that has caused problems with people too. |
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Posted: 5/12/2022 11:58:29 AM EDT
[#14]
Quote HistoryQuoted: Thanks. I use the better mag/ready mag adapter, so I can use Smith and Wesson mags. And I also use a McFadden Mag loader to avoid rim lock, and I can’t say enough about this mag loader! Mine does not have a buffer tube spring and buffer, but it does have a little hex nut that puts forward pressure on the CMMG 22 kit to keep it in place. Others who have buffers and Springs often use a plug of some sort to put extra pressure forward on the CMMG kit to keep it from moving as that has caused problems with people too. Thank you for that, would you be able to post a couple pics of that please? It’s hard to get an idea of a lot of things when you don’t use the majority of social media… |
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Posted: 5/12/2022 9:42:05 PM EDT
[#15]
Quote HistoryQuoted: Thank you for that, would you be able to post a couple pics of that please? It’s hard to get an idea of a lot of things when you don’t use the majority of social media… Quote HistoryQuoted: Quoted: Thanks. I use the better mag/ready mag adapter, so I can use Smith and Wesson mags. And I also use a McFadden Mag loader to avoid rim lock, and I can’t say enough about this mag loader! Mine does not have a buffer tube spring and buffer, but it does have a little hex nut that puts forward pressure on the CMMG 22 kit to keep it in place. Others who have buffers and Springs often use a plug of some sort to put extra pressure forward on the CMMG kit to keep it from moving as that has caused problems with people too. Thank you for that, would you be able to post a couple pics of that please? It’s hard to get an idea of a lot of things when you don’t use the majority of social media… Here’s the back of the receiver. A hex screw is kinda visible in the middle hole.  Attached FileHere is a pic of the pressure plug. You simply insert it into your buffer tube. It puts forward pressure onto the CMMG kit.  Attached Filehttps://taccom3g.com/product/pressure-plug-ar-22/ https://www.redi-mag.com/product/better-mag-s-22-rimfire-magazine-adaptor/ |
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Posted: 5/13/2022 8:45:17 AM EDT
[#16]
Quote HistoryQuoted: Here’s the back of the receiver. A hex screw is kinda visible in the middle hole. https://www.ar15.com/media/mediaFiles/2158/9913F850-DE8D-4F37-AA78-6F89175A5701_jpe-2381943.JPG Here is a pic of the pressure plug. You simply insert it into your buffer tube. It puts forward pressure onto the CMMG kit. https://www.ar15.com/media/mediaFiles/2158/3007BF8C-D119-4309-BA5C-F61A65D9A607_jpe-2381949.JPG https://taccom3g.com/product/pressure-plug-ar-22/ https://www.redi-mag.com/product/better-mag-s-22-rimfire-magazine-adaptor/ The more you know!!! Thanks again! |
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Posted: 5/14/2022 10:39:02 AM EDT
[#17]
Quote HistoryQuoted: Take it apart and smooth/polish the rails that the bolt rides on. All of mine have worked flawlessly after polishing. THIS! I have worked with three .22LR AR BCGs (two CMMG and a TACCOM) and all three required a polish job using a felt Dremel wheel, progressive rouges (particularly on the feed ramp) finishing with Mother’s Billet as a final touch. Otherwise, expect a ~500 round break-in period with multiple failures to feed or eject. |
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Posted: 5/15/2022 4:02:29 PM EDT
[#18]
I’m going to save you some time and angst
Cmmg kit Dedicated cmmg barrel- do not use a take off 5.56 barrel you have laying around. This barrel should come with a little collar to replace the chamber adapter on the conversion kit Sell the mag that comes with kit Buy m/p 15/22 mags Buy redi-mag mag well adapter. Accurate, reliable, 100% identical manual of arms. Pick whatever handguard, accessories, etc you want. Easily will win you a rifleman patch at Appleseed. |
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Posted: 5/17/2022 3:26:50 PM EDT
[#19]
Thank you all for some great advice!
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Posted: 5/26/2022 7:45:35 PM EDT
[#20]
I built this on a Mattis lower.
RTB bolt, CMMG 4.5" barrel, Cheapo 5" rail, Fits in a computer bag, with 25 round mag in it. Only problem I've had is with some shittly Federal 38 grain ammo that didn't work in much of anything. Going to try it with my new Oculus this weekend.  {pew} Attached File |
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Posted: 5/28/2022 6:03:05 PM EDT
[#21]
I'm loving my RTB lightweight build, this thing is stupid fun even with a 16" pencil barrel. Thanks to some of you jerks, I might have to SBR the lower and do a 4-6" upper too.
 The only 'weird' modification I've done to it was adding a 2mm silicone bumper onto the KNS flange assembly to add a little bit of pressure onto the bcg. Malfunctions have been at 0 since then, as it took up the tiny bit of free play between the bolt and where the buffer would normally be. Beyond that, I've got a Bore Buddy enhanced firing pin and extractor for when I need it. No other concerns with it. Btw, there's a dedicated .22 AR subforum. https://www.ar15.com/forums/ar-15/Rimfire-and-Pistol-Calibers/15/ 
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