Thoughts on this...
Ive got a 9" bbl AAC upper in 300 blackout on a pistol lower. Im waiting on my form 1 to come back on a rifle lower to SBR it (might be 6-9 months). So im thinking about getting one of the Sig arm braces to put on until then.
My other thought is that when i travel with the little beast i can use the pistol lower with the brace and not have to hassle with ATF permission to take it outta state
Third, if i use it as a HD gun i would rather have a pistol lower taken as evidence (if it came to that) then have a tax stamped lower.
Any thoughts on this plan??