Shape_Shifter
Alpha
So I just purchased my first AR. Been wanting a 300 BLK AR pistol for some time now and finally grabbed one recently. Now i know there are lots of "rules" when it comes to AR pistols and the ATF and all that but my question is, would it be legal to replace the shockwave brace that it came with, to a different brace, for example a SB3 tactical brace maybe? Or am i not "allowed" to make any modifications of any kind?