X-PGH 发表于 2018-5-16 06:49
除了不能有 Vertical Grip 外, AR Pistol with variety of choices of BRACES, 要比 SBR 来的简单, 用的方 ...
If the firearm's overall length is over 26'' and the firearm is not actually concealed on the person, attaching a vertical forward grip to it does not constitute NFA/AOW.