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Posted: 1/29/2017 7:58:59 PM EST
Quote History Originally Posted By shadowcop:
I usually buzz my chambers every other range trip. The lead and gunk will build up. The chamber will just get smoother. Dave N. When shooting Wolf I do this also. I used a bore mop and J-B paste to polish the ramp and chamber on a cordless drill. I did polish the rails also. |
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Posted: 2/5/2017 7:09:42 AM EST
Great write up OP. I have 2 dedicated uppers ( a 10 yr old Spikes and a custom build 20" heavy barrel that a bought from the EE a few years ago) and a couple of CMMG conversions. I run mostly all ammo through them with little problems but have had my share of FTF or FTE like others. I hadn't honestly read about this until now and wanted to thank you for the great write up.
I wanted to ad for those having problems with CCI subs, try using a Taccon pressure plug. These are short money and will probably take care of the problem by tightening up the gap between the rear of the conversion and the buffer. I was having problems with that ammo after not being able to get either Rem or Aguila where I live. I tried all the tricks that have been written about and could not get CCI to work. Finally read something about the pressure plug and for $8 I decided to try it out. It worked for me and now lets me run anything through my 22 uppers. As I wrote earlier, I will definitely add the buzzing of the chamber and feed ramp techniques when cleaning. OP you are right, shooting singles out of an .22 AR isn't a lot off fun. |
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Posted: 2/17/2017 3:23:24 PM EST
Thanks for the info, guys! I did this to my CMMG .22 upper on a Spikes lower and my suppressed M&P-15/22. They both ran great with no malfunctions. 100 RDS in the CMMG and 150 thru the M&P
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OR, USA
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Posted: 4/11/2017 11:49:30 AM EST
Just happened to look at this posting again today ,one thing i found out about my CCMG dedicated upper. It has a little bit of weld material on the back of it. This in turn marked my recoil buffer, in my stock so, you guys might check yours. I very carefully smoothed it off, betting it won't leave any more marks. I'll cover the old ones up with black magic marker to see if it marks it again.
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KY, USA
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Posted: 7/9/2017 12:20:48 AM EST
Quote History Originally Posted By ARKLITE881South:
Just happened to look at this posting again today ,one thing i found out about my CCMG dedicated upper. It has a little bit of weld material on the back of it. This in turn marked my recoil buffer, in my stock so, you guys might check yours. I very carefully smoothed it off, betting it won't leave any more marks. I'll cover the old ones up with black magic marker to see if it marks it again. GAWD, its been well over six years since I wrote up the original piece! I have sent thousands of rounds of .22 down range since then. |
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Posted: 7/10/2017 9:23:12 PM EST
Quote History Originally Posted By forever4:
A very common problem. I use a file to smooth it all out. Also, I don't know where to get them now, they use to have them at MidwayUSA, but there is a company that made a little stick on plastic piece that stuck on the buffer. It was maybe 1/8" thick and kept the adapter from marring the finish on the buffer. Not only that it kept the .22 adapter nice and snug up. You can also use the TACCOM plug piece to do the same thing. GAWD, its been well over six years since I wrote up the original piece! I have sent thousands of rounds of .22 down range since then. |
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TX, USA
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Posted: 8/31/2017 3:24:04 PM EST
[Last Edit: 8/31/2017 3:26:19 PM EST by cantfishenough]
I haven't finished reading through the whole thread, but noticed that somewhere along the way it's been resurrected.
On that note, I wonder if anyone has a way, of if the original poster is still around to update the pictures that are no longer in the first couple pages from 2011-2012??? (or if anyone has new pictures of the same procedures they have done recently). I am just now entering the world of 22LR conversion bolts etc. Loving this site and thread for all these pcc and 22lr AR combinations. |
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VA, USA
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Posted: 10/8/2017 11:52:47 PM EST
Great thread, thinking about getting the PSA upper.
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NC, USA
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Posted: 10/10/2017 2:36:39 PM EST
[Last Edit: 10/10/2017 2:37:14 PM EST by ebr_citizen]
Any recommendations on a cleaning rod that is easy to chuck up in a drill?
Also, is the threading on cleaning rods and brushes pretty much standardized? I have an Otis kit with a bunch of brushes (and cables, hence the need for a cleaning rod to chuck up in a drill) and wondering if those Otis brushes will thread onto most cleaning rods. |
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USA
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Posted: 10/10/2017 3:00:38 PM EST
Quote History Originally Posted By ebr_citizen:
Any recommendations on a cleaning rod that is easy to chuck up in a drill? Also, is the threading on cleaning rods and brushes pretty much standardized? I have an Otis kit with a bunch of brushes (and cables, hence the need for a cleaning rod to chuck up in a drill) and wondering if those Otis brushes will thread onto most cleaning rods. I think any rod would fit into a drill chuck. I use the same cleaning rods from my kit. |
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Posted: 11/12/2017 10:30:39 PM EST
[Last Edit: 11/13/2017 11:04:01 AM EST by swampfoxoutdoors]
I’m building a dedicated 22 sbr.
I recently put together the lower for the build. Shooting in the back yard I was having issues with the hammer resetting. The gun is feeding great. Any suggestions on a reduced power hammer spring? When I get a FTF their is always a loaded round in the chamber but the hammer never cocks itself. Would like for it to run subs as well. In my other sbr (pending) lower it would run CCI SV and all bulk pack I tried. |
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Posted: 11/12/2017 10:52:05 PM EST
Some of you guys need to start using Imgur.
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Posted: 11/13/2017 9:41:17 AM EST
Quote History Originally Posted By swampfoxoutdoors:
I’m building a dedicated 22 sbr. I recently put together the lower for the build. Shooting in the back yard I was having issues with the hammer resetting. The gun is feeding great. Any suggestions on a reduced power hammer spring? When I get a FTF their is always a loaded round in the chamber but the hammer never cocks itself. Would like for it to run subs as well. In my other sbr lower it would run CCI SV and all bulk pack I tried. |
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Posted: 11/13/2017 11:02:45 AM EST
Quote History Originally Posted By pc299:
What trigger and have you tested the lower with a 5.56 upper? Have not ran my 5.56 upper on it. |
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Posted: 11/13/2017 12:44:37 PM EST
Quote History Originally Posted By swampfoxoutdoors:
Have not ran my 5.56 upper on it. |
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Posted: 11/13/2017 7:49:42 PM EST
Quote History Originally Posted By pc299:
Try that first Quote HistoryOriginally Posted By pc299:
Originally Posted By swampfoxoutdoors:
Have not ran my 5.56 upper on it. |
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NV, USA
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Posted: 5/29/2018 10:57:17 PM EST
Wow, what an awesome thread...
Ordered a CMMG 4.5" Kit to build a dedicated .22 LR upper for one of my SBR's. It will be suppressed and I can't wait to receive the parts. Thanks for the tips and understanding of what the general operating issues can be, and how to avoid them. |
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MI, USA
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Posted: 5/30/2018 8:10:28 AM EST
Quote History Originally Posted By dphill:
When shooting Wolf I do this also. I used a bore mop and J-B paste to polish the ramp and chamber on a cordless drill. I did polish the rails also. Quote HistoryOriginally Posted By dphill:
Originally Posted By shadowcop:
I usually buzz my chambers every other range trip. The lead and gunk will build up. The chamber will just get smoother. Dave N. I did polish the rails also. MHO, YMMV, etc. |
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Posted: 6/7/2018 5:34:19 AM EST
How do you actually use the finish chamber reamer? I have no experience with this tool so a bit of guidance would be much appreciated.
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MI, USA
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Posted: 6/7/2018 3:10:35 PM EST
Quote History Originally Posted By bravo5two:
How do you actually use the finish chamber reamer? I have no experience with this tool so a bit of guidance would be much appreciated. MHO, YMMV, etc. |
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Posted: 6/13/2018 11:26:31 AM EST
[Last Edit: 6/13/2018 11:31:01 AM EST by wildearp]
Great information here. It never hurts to polish things.
My CMMG stainless kit has given me no issues, other than it empties my mags very quickly. 
I highly recommend the McFadden lightning loader. It may be more fun to load mags than actually shooting. 
I have to add that I have a JP speed hammer and yellow spring in a large pin Colt. It will not reliably ignite rimfires. I had to put a note on my CMMG storage box to not pick that rifle for the kit. I also keep a stock USGI type charging handle in my CMMG go-box because the kit had clearance issues with the Gasbuster. |
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KY, USA
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Posted: 1/19/2021 11:44:12 PM EST
Hello all!
I just had to go back and check this thread. Its been ten years since I first posted it and I am grateful it has helped many people over the years. The information in this thread applies to many firearms, not just .22 rim fires. For the record I am still shooting that same CMMG dedicated upper I used in the original post. It gets normal cleanings and just keeps running day after day, 100% trouble free. CMMG makes a great product! Where the hell did the past ten years go? Seems like just yesterday! |
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Posted: 1/20/2021 8:12:33 PM EST
Wow ten years here was one of my comments from page one. Was true then still true now.
This thread will now be around for quite some time I would like to thank forever4 for making the thread and Gloftoe (Mod of this Forum) for tacking the thread |
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NY, USA
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Posted: 1/20/2021 9:14:13 PM EST
Pretty nice write up
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CA, USA
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Posted: 2/23/2021 5:58:04 PM EST
[Last Edit: 2/23/2021 8:36:38 PM EST by weezy675]
came across this forum and this thread specifically after having issues with my dedicated AR 22 upper. Let me know what you think of the hang on my Right to Bear bolt group feed ramp and the chamber of my 16" barrel, LOL.
https://ibb.co/jTy82gM https://ibb.co/Pg3WV5k https://ibb.co/DzWyWH9 Was having some FTE and some Failure to Feed (crushing the ammo). Finally contacted CMMG and they are sending me a new barrel collar without any questions. I also installed the Bore Buddy kit and installed the strongest extractor pin in the kit. Fingers crossed these will help my issues. I may have to follow OP's instructions to polish the barrel chamber and feed ramps. |
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