I have 2 MCX Spear LT lowers - one an 11.5” pistol, and the other a 16” rifle. One is going to get a Form 1.
It seems like I should Form 1 the lower that came with the 16” rifle and keep the 11.5’” lower a pistol that can be used with a brace when I travel across state lines. I base this on an understanding that rifles lowers cannot be used with a brace and a barrel less than 16”, right?