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Thread: CMMG .22lr conversion - a brief review

  1. #91
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    Quote Originally Posted by redtazdog View Post
    That 10 rnd mag can be changed to a 27 rnd easy, take the mag apart and remove the 2 plastic pegs that stop the follower.
    Although I only bought 27 rounders, that is good info. Thanks!

  2. #92
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    Quote Originally Posted by Dan Goodwin View Post
    Ordered 12/23. Received 12/29. The day I ordered Brownells had 200 of the CMMG + 10-round Black Dog kits.
    More good info, thanks! Now we just need that range report.

    BTW, I have now been thru 2 bricks of Federal 750 (1,100 rounds) and not had one single failure to fire. Very, very good reliabilty for $13.50 bricks. With Remington, I was getting 3 to 5 duds about every 100 rounds, not just with my CMMG, but with my Buck Mark and Marlin 60 as well.

  3. #93
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    Ummm, yeah, the range report.

    The good news is it put 5 Aguila Sniper Subsonics into less than an inch at 25 yards about 1.5 inch under the Aimpoint dot on my 6933...and no tipping.

    The bad news: It didn't feed fire or function worth a popcorn fart with Fed HiPwr bulk pak..brand new purchased today.

    Sometimes the trigger wouldn't reset.

    Sometimes the unit apparently didn't go into battery, it would click and nothing would happen.

    Every once in awhile it looked like a light strike on the rim.

    I should have paid more attention to Linder's trials and tribulations and assumed the worst.

    I AM NOT a tinkerer; when I pay more than two bills for a device I expect it to work right out of the box (or well lubed as was suggested). I shouldn't have to take it apart, sand the parts down, etc.

    Needless to say, I'm pissed.

    I am going to clean the crap out of it tonite, relube it and try again tomorrow (another 50-mile round trip to the range).

    If it is still crapping out I'm calling Brownells and demand they swap it even for a Nordic kit.

    Had my 25-year-old 10/22 along and it ran through 250 rounds like it was eating popcorn at a horror movie.

    Any suggestions appreciated, but I'm feeling burnt.
    "The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. " _ Thomas Jefferson

  4. #94
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    What you described is what happened to me my first time out, all except for the trigger reset. But, I had not cleaned and relubed it first. And I was using the crappy Remington Golden ammo.

    I went back to your post of yesterday and see you said you lubed the rails. Did you clean all of the shipping gunk off it first?

    After my first outing I took the unit apart except for the firing pin scrubbed all the gunk off it with tooth brush and solvent, and dryed everything.

    I then put a very light coat of Slide Glide everywhere the rails and bolt contact each other. And I lubed everywhere else with a very light coat of gun oil.

    Since I also changed ammo before I took it out the second time I can't say for sure which made it work better, but it has run great every since with little to no maintenence. Good luck!

  5. #95
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    bummer Dan - you'll enjoy it once everything settles in...

    If you have a small punch, try removing the firing pin retaining pin and see if the firing pin falls out under it's own weight. I've got a hunch it could use a little 'polishing' so that it travels freely in the bolt; pay attention to the end of the pin where it strikes the primer. I found that mine would sometimes hang up in the hole in the bolt face. The minor tweaking I did made a significant difference.

    Don't load your magazine(s) to capacity until you have 300-500 rounds through it; heck I couldn't load it to capacity if I tried the first few range visits, the magazine spring was very stiff. Now that mine is broken in I can load it up and run it with no issues.

    Best of luck!
    Last edited by lindertw; 12-30-08 at 21:04.

  6. #96
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    I have a Ciener kit that runs perfectly with 2 different ARs and refused to run at all with another gun for some reason. Same ammo, same time, same place.

  7. #97
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    OK. Brake Cleaner. Lube. Aand a Good Act of Contrition. Still think it's wrong to have to re-manufacture small parts to ensure proper function.
    "The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. " _ Thomas Jefferson

  8. #98
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    Quote Originally Posted by hatt View Post
    I have a Ciener kit that runs perfectly with 2 different ARs and refused to run at all with another gun for some reason. Same ammo, same time, same place.
    The AR that dousnt work has a stronger hammer spring than the 2 guns that work.
    Thats my guess because this is a common problem, not all trigger springs,
    hammer springs, disconector springs have the same strength.
    If the hammer spring is to strong it wont always let the bolt come back far enough
    to cycle the gun.

  9. #99
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    My replacement chamber adapter from CMMG has cracked. No pics, but it looks just like the original that went south on me. I put ~100 rounds down range tonight, for a total of ~200 since receiving the replacement adapter.

    I'm calling Brownells on Monday to discuss return of the item, and I'll email CMMG to let them know that their part failed again.

  10. #100
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    Home computer has been beset by goblins, but sent unit back to CMMG via UPS on Monday with their call tag.

    Praying the replacement works right when it arrives!
    "The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. " _ Thomas Jefferson

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