Page 15 of 19 FirstFirst ... 51314151617 ... LastLast
Results 141 to 150 of 187

Thread: CMMG .22lr conversion - a brief review

  1. #141
    Join Date
    Jan 2008
    Location
    Republic of Texas
    Posts
    4,088
    Feedback Score
    5 (100%)
    Quote Originally Posted by RVGP View Post
    What I noticed last night when I took it apart after the test firing was the bolt itself moved side to side while in the complete rail assembly and was kinda binding up when closed. When I took off the insert portion, the bolt became tight side to side in the rails, like I would expect. The cutouts in the rail where the insert sits are somewhat rough cut. So, either the grooves in the 223 insert are cut too shallow or the rail cutouts are too shallow. Either way the rails are being forced out, side to side, maybe making contact with the inside of the upper receiver and making insertion and extraction harder AND making the bolt sloppy and not locking up properly to extract the empty. I could file the rail down until the bolt becomes tight.

    Would you mind checking to see if your bolt move side to side?

    What do you think, should I just say 'hell with it' and send it back for replacement to try to keep fixing it?
    Maybe your's was built on a Monday, LOL.

    When my kit is fully together and the bolt is closed on the 22LR chamber there is some very, very slight side to side movement of the bolt on the rails but you need to have some or the bolt won't be able to freely slide on the rails.

    But, all in all, mine fits very nicely on the rails and there is no binding at all when I cycle the bolt by hand out of the rifle or with the charging handle in the rifle. It cycles very smoothly either way. And the contact areas on my rails still have finish on them; allbeit, you can see wear marks where the bolt rides on the rails.

    The slight movement I get is at the rear of the bolt since when the bolt is closed on the 22LR chamber the extractor makes another contact point between the bolt and the chamber adaptor and it is pretty solid at the point.

    Also, you have the recoil spring housing part of the bolt that rides in the charging handle channel providing additional stability to the whole conversion bolt assembly so it shouldn't be able to bind up that much. Mine fits in my rifle just as nicely as does my 5.56 BCG.

    No offense, but are you sure you got the 22LR chamber assemble back on the rails correctly? It is a bugger to get on sometimes.

    In answer to your last question, yes I would send it back in a heartbeat. I would think that the more you work on it and if that work is obvious you might be voiding the lifetime warranty from CMMG.
    Last edited by austinN4; 09-28-09 at 14:13.

  2. #142
    Join Date
    May 2008
    Location
    Colorado
    Posts
    13,168
    Feedback Score
    0
    Quote Originally Posted by austin12gauge View Post
    I am sorry you are having problems with your CMMG kit, but if monkeys made mine they were good monkeys. My CMMG keeps right on ticking with narry a problem. And no sanding either. Same goes for my BDM mags - no sanding here either and they run fine.

    I am not making fun of your problems, but I didn't want someone searching for info to think they all had problems.

    Did your's have problems before you modified it, or did you do the mods before you shot it?
    Give enough monkeys a typewriter and time....

    There is engineering and there is execution. The units engineering seems fine, it is the assembly that seemed to be actively not executed right, hence the monkey comment. I've had a Ceiner kit before that I sold off at one point, so I am very familiar with the units. I agree, the phosphating on these is a bit rough. I didn't do anything that a couple of thousand rounds wouldn't do. It was the feed ramp that got me. I have to say I didn't really pay attention when I cleaned it the first time so I didn't notice the marks, I hope a lead bullet and brass case didn't do that At least my unit didn't rupture.

    I understand that it is a 22 kit, and my standards were low to start, so I'm not saying it is a bad unit. I just wish they had followed the Hippocratic oath and 'do no harm'
    I just did two lines of powdered wig powder, cranked up some Lee Greenwood, and recited the BoR. - Outlander Systems

    I'm a professional WAGer - WillBrink /// "Comey is a smarmy, self righteous mix of J. Edgar Hoover and a gay Lurch from the "Adams Family"." -Averageman

  3. #143
    Join Date
    Jan 2008
    Location
    Republic of Texas
    Posts
    4,088
    Feedback Score
    5 (100%)
    Quote Originally Posted by FromMyColdDeadHand View Post
    Give enough monkeys a typewriter and time....
    Are you referring to me?? The quote you posted was in response to RVGP.
    Last edited by austinN4; 09-28-09 at 16:11.

  4. #144
    Join Date
    May 2008
    Location
    Colorado
    Posts
    13,168
    Feedback Score
    0
    Quote Originally Posted by austin12gauge View Post
    Are you referring to me?? The quote you posted was in response to RVGP.
    I started the monkey reference, but if you and RVGP have something going on between the two of you, I'm sorry I interfered.
    I just did two lines of powdered wig powder, cranked up some Lee Greenwood, and recited the BoR. - Outlander Systems

    I'm a professional WAGer - WillBrink /// "Comey is a smarmy, self righteous mix of J. Edgar Hoover and a gay Lurch from the "Adams Family"." -Averageman

  5. #145
    Join Date
    Jan 2008
    Location
    Republic of Texas
    Posts
    4,088
    Feedback Score
    5 (100%)
    Quote Originally Posted by FromMyColdDeadHand View Post
    Give enough monkeys a typewriter and time....
    Sill trying to figure out this reference.

    Quote Originally Posted by FromMyColdDeadHand View Post
    I started the monkey reference, but if you and RVGP have something going on between the two of you, I'm sorry I interfered.
    I wasn't trying to slight you - sorry you got your feelings hurt.
    Last edited by austinN4; 09-28-09 at 18:56.

  6. #146
    Join Date
    May 2008
    Location
    Colorado
    Posts
    13,168
    Feedback Score
    0
    A million monkey, with a million typewriters for a million years and you eventually get "A Tale of Two Cities". Even a monkey can get it right by chance. It was in the Simpsons.
    I just did two lines of powdered wig powder, cranked up some Lee Greenwood, and recited the BoR. - Outlander Systems

    I'm a professional WAGer - WillBrink /// "Comey is a smarmy, self righteous mix of J. Edgar Hoover and a gay Lurch from the "Adams Family"." -Averageman

  7. #147
    Join Date
    Jan 2008
    Location
    Republic of Texas
    Posts
    4,088
    Feedback Score
    5 (100%)
    Quote Originally Posted by FromMyColdDeadHand View Post
    A million monkey, with a million typewriters for a million years and you eventually get "A Tale of Two Cities". Even a monkey can get it right by chance. It was in the Simpsons.
    Sorry, I didn't get the reference, not a Simpsons guy - thanks for clarifing. And sorry you are having trouble with your CMMG. I guess they either run right out of the box or they don't. I got lucky and got a good one. I bought mine last November directly from CMMG.

  8. #148
    Join Date
    May 2008
    Location
    Colorado
    Posts
    13,168
    Feedback Score
    0
    I bought mine in the same time frame. I won't be dissapointed till I put another 500 or so rounds thru it. With ammo as hard and expensive as it is, I'm willing to put up with some hassle.
    I just did two lines of powdered wig powder, cranked up some Lee Greenwood, and recited the BoR. - Outlander Systems

    I'm a professional WAGer - WillBrink /// "Comey is a smarmy, self righteous mix of J. Edgar Hoover and a gay Lurch from the "Adams Family"." -Averageman

  9. #149
    Join Date
    Sep 2009
    Posts
    7
    Feedback Score
    0
    OK, so Austin, you got yours directly from CMMG, Dead Hand where did you buy your CMMG? I got mine thru Brownells. Brownells has a LIFETIME no BS guarantee on ALL their products they sell, like Dillon Precision, if it breaks 5 years down the road they will replace it, no matter the manufacturers warranty. I like this policy, which is why I reload on two of the Dillon machines, and buy from Brownells. Sportsmans Guide is a bit like that too.

    Anyway, I took Austins advice and returned it to Brownells for an exchange. What I hope is that Brownells didn't receive a tainted lot and mine was a 1 in 10 or so bad unit.

    I understand, from customizing guns with aftermarket parts, that 'universal fit' doesn't always mean a perfect fit in ALL cases and a little 'smithing might be needed from brand to brand, but mine was beyond that.

    Worse case scenario, if the replacement still is fubar'd, I'll contact CMMG directly for a replacement. I really want this unit to work for me, it is much cheaper than buying a dedicated AR .22lr.

    Thanks for your help, I'll give an update when I get the replacement.
    Last edited by RVGP; 09-29-09 at 22:28.

  10. #150
    Join Date
    May 2008
    Location
    Colorado
    Posts
    13,168
    Feedback Score
    0
    CMMG direct for me. I didn't know that about Brownells, makes their premium make sense.
    I just did two lines of powdered wig powder, cranked up some Lee Greenwood, and recited the BoR. - Outlander Systems

    I'm a professional WAGer - WillBrink /// "Comey is a smarmy, self righteous mix of J. Edgar Hoover and a gay Lurch from the "Adams Family"." -Averageman

Page 15 of 19 FirstFirst ... 51314151617 ... LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •