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Thread: .22 conversion for training

  1. #1
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    .22 conversion for training

    If anyone cares: I just picked up a CMMG .22 conversion bolt and some BDM magazines (the full-profile ones) in the hopes of getting some less expensive M4 training time. I know it isn't the SAME as shooting full 5.56, but for running drills at under 100, I have high hopes for it.

    Good news: The kit ran like a sewing machine in my Mk18/10.3 using CCI Mini-Mags. 400 rounds downrange with no malfunctions of any kind and 'respectable' accuracy (I can make 25 yd headshots with it no problem, on the walk). I didn't bench it, because I didn't buy it for that.

    I lubed it generously with CLP before firing the first shot, and I plan on treating it like my 5.56s: WET.

    So far, so good. I'll check back in when I've had more time to wring it out.

  2. #2
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    With the .22's they dont always need to be run wet like a regular AR as it will get nasty and muck things up.

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    I once had a Ceiner kit and I later sold it. I just didn't feel that it was any more worthwhile (from a informal training perspective) than dryfire practice or maybe shooting a 10/22.

    Now in a pistol platform however, I feel that the "bang for buck" ratio is much higher. I use my AA Glock conversion much more than I ever did they Ceiner.
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    Quote Originally Posted by Shihan View Post
    With the .22's they dont always need to be run wet like a regular AR as it will get nasty and muck things up.
    +1

    The only moving parts are the bolt and the firing pin, and covering the whole kit in oil just makes it filthy.

    I just put a bit of oil or grease where the bolt rides the rails and then let a drop of oil run down the firing pin channel. Done.

    Bimmer

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    One of the guys that shoots our matches with a centerfire AR runs a rimfire in our drills nights. I've found it very interesting to watch him over the last year or so and see where he appears to be improving and how I think the .22 plays into that.

    One of the biggest issues I've seen with him is that his hammers and triples appear to suffer. Our scoring requires at least two shots on target and most people throw three to be sure (a failure to neutralize is 30 seconds, and it only takes maybe a second to throw that extra shot). I find that in watching him his multiple-shot-strings are where he needs the most work, and I think that the rimfire is actually hurting him in this regard.

    I still want a rimfire upper, but IMHO you need to limit how you use it to marksmanship drills and not use it for manipulation/reload practice or hammer/triples.

  6. #6
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    Quote Originally Posted by Bimmer View Post
    The only moving parts are the bolt and the firing pin, and covering the whole kit in oil just makes it filthy. I just put a bit of oil or grease where the bolt rides the rails and then let a drop of oil run down the firing pin channel. Done.
    I totally agree. After cleaning, I put a very thin coat of Slide Glide on the contact areas of the bolt and rails of my CMMG conversion, then I put a very thin coat of gun oil everywhere else. Runs great (2,300 rounds with no failures to feed fire or extract, except for one dud round) and doesn't get that dirty with Federal #750 bulk pack. I even stopped cleaning it after every session as it wasn't very dirty.

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    Quote Originally Posted by QuietShootr View Post
    If anyone cares: I just picked up a CMMG .22 conversion bolt and some BDM magazines (the full-profile ones) in the hopes of getting some less expensive M4 training time. I know it isn't the SAME as shooting full 5.56, but for running drills at under 100, I have high hopes for it.

    Good news: The kit ran like a sewing machine in my Mk18/10.3 using CCI Mini-Mags. 400 rounds downrange with no malfunctions of any kind and 'respectable' accuracy (I can make 25 yd headshots with it no problem, on the walk). I didn't bench it, because I didn't buy it for that.

    I lubed it generously with CLP before firing the first shot, and I plan on treating it like my 5.56s: WET.

    So far, so good. I'll check back in when I've had more time to wring it out.
    I looked at the CMMG website; are BDM mags supplied with them? I ask because I also looked on Brownells and neither state the type of mag supplied with the kit.
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    Quote Originally Posted by Dave L. View Post
    I looked at the CMMG website; are BDM mags supplied with them? I ask because I also looked on Brownells and neither state the type of mag supplied with the kit.
    I ordered my kit directly from CMMG last year. It came with one BDM mag at $199 and I also order a 3-pack of additional BDM mags for $100.

    I see now on CMMG's web site that they come with CMMG mags. I am not sure if they are rebranded BDG or what, but they sure are less ($60 for 3) than what I paid for the BDM.

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    Quote Originally Posted by rob_s View Post
    One of the guys that shoots our matches with a centerfire AR runs a rimfire in our drills nights. I've found it very interesting to watch him over the last year or so and see where he appears to be improving and how I think the .22 plays into that.

    One of the biggest issues I've seen with him is that his hammers and triples appear to suffer. Our scoring requires at least two shots on target and most people throw three to be sure (a failure to neutralize is 30 seconds, and it only takes maybe a second to throw that extra shot). I find that in watching him his multiple-shot-strings are where he needs the most work, and I think that the rimfire is actually hurting him in this regard.

    I still want a rimfire upper, but IMHO you need to limit how you use it to marksmanship drills and not use it for manipulation/reload practice or hammer/triples.
    Is he just not shooting all three? I would think that you'd be more likely to bang out the shots? It will teach you not to run the mag dry

    With ammo as expensive and scarce as it is it, it would be cool if there was a 12guage 22lr conversion kit of some sort. By fun to run some indoor or reduced range "66" (3x22lr) three gun.
    I just got one, but had one a few years ago when I had my 10+ pound high-power rifle. What a hoot to shoot, and let people aclimate themselves to the gun.
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  10. #10
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    Quote Originally Posted by FromMyColdDeadHand View Post
    Is he just not shooting all three? I would think that you'd be more likely to bang out the shots? It will teach you not to run the mag dry
    No, he's just not improving his hammer split times at all with his full power 5.56 loads because he's getting used to shooting hammers with no recoil.

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