Converting up from 22lr?

Discussion in 'AR-15 Discussion' started by WannaBeVagabomd, Oct 1, 2012.

  1. WannaBeVagabomd

    WannaBeVagabomd New Member

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    I got my S&W M&P in the other day and it works great. But for future reference I'd like to know if if it's possible to change the caliber up (I know you can convert any to 22, just not sure if the opposite is true). I want to convert it to something above 5.56, but not to a full sniper round, so if you have any suggestions. Also I saw a titanium receiver and I was wondering if I could switch them out. Thanks.
     
  2. JonM

    JonM Moderator

    No you cant. There is no buffer tube for the bcg to recoil into.
     

  3. c3shooter

    c3shooter Administrator Staff Member

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    In addition to no buffer, there is, I do believe, a size difference on the width of the uppers between .22lr and larger caliber guns. No fit.
     
  4. fsted2a

    fsted2a New Member

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    Probably not. From what I have read in other forums and in magazines, there are just so many proprietary parts in both the upper and lower on M&P .22LR that you would spend more money on the conversion than it would be to just buy a regular AR.
     
  5. WannaBeVagabomd

    WannaBeVagabomd New Member

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    I guess my my little day dream will take a bit longer. My bad, it was an aluminum receiver. What parts are useable would you say?
     
  6. WannaBeVagabomd

    WannaBeVagabomd New Member

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    And by that I mean what would I have to buy new and what could I scavenge off it when necessary. The handguard and stock be nice.
     
  7. jjfuller1

    jjfuller1 New Member

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    i think your best bet would be to keep the .22 as is for a fun cheaper plinking rifle, and do a complete build for your larger calibered rifle. you would be able to pick and choose what parts you want for your larger rifle. while still being able to shoot the elcheapo ammo in a similiar platform. doing this will give you 2 good rifles, you knowing you made the rifle the way you want it, and lots of practice time.
     
  8. WannaBeVagabomd

    WannaBeVagabomd New Member

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    Visually speaking, I know what I want, but I'm not sure about functionality. The best I could say is a light rifle in a good sized caliber that's good for the standing position.
    Looking for a balance of maneuverability and range I guess.
     
  9. Quentin

    Quentin New Member

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    Please be perfectly clear. Do you have the M&P15-22 or not? Polymer receivers? Makes a big difference.
     
  10. WannaBeVagabomd

    WannaBeVagabomd New Member

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    Yeah, I do. I just thought about changing it piece by piece until I got to what I want.
     
  11. JTJ

    JTJ Active Member

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    The M&P 15-22 was designed and built to be a 22lr. You can not change it. There are several calibers available in the AR 15 rifle platform. they go from .223 to .458 and possibly larger. It sounds like you might be interested in the 6.8 or 7.62 (300 Blackout) caliber size. In any case you will need a whole new platform.
     
  12. WannaBeVagabomd

    WannaBeVagabomd New Member

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    Someone suggested the 6.5 Grendel. Any thoughts? Also any thoughts on a kit or complete upper and lowers?
     
  13. fsted2a

    fsted2a New Member

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    The buttstock, and most of the FCG. Maybe the handguards. I think you should leave everything else with the .22LR. Seriously, you should get a separate AR if you want to shoot rifle rounds. Every .22LR AR I have seen is built exclusively for .22LR, however, you may be able to use the .22LR upper on an AR built for .223, if the mag will work.