- Jul 29, 2014
- 49,818
Being as I am a Maryland resident, I was wondering if it would be legal to switch out the upper on an AR 15 SBR'd lower(5.56 10.5" barrel in this case) for a .22lr upper that is shorter. I know that rim fire SBRs don't require the over 29" OAL. I was just wondering if they can be interchangeable.
Thanks.
ETA The swap will only be temporary. The original center fire upper will be maintained and continue to reside on the lower when the .22 is not in use.
Thanks.
ETA The swap will only be temporary. The original center fire upper will be maintained and continue to reside on the lower when the .22 is not in use.
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