So I got tinkering around with this lower, gonna put a new trigger and ambi selector on. Done this before a few time but never had a selector with a screw on it. It has a detent ball and slot but I can't get it to turn more than about 1/8 turn.
What's the deal? Bushmaster XM15-E2S.
What's the deal? Bushmaster XM15-E2S.