AR15 PARTS KITS - AN OVERVIEW

I'm going to disagree with one point. Equally as all squares are rectangles but not all rectangles are squares, all M4s and M16s are AR-15s although not all AR15s are M4s or M16s.Find the barrel nut and put it on for the barrel.  One other parts demonstrated higher than are for mounting the Midwest handguard.Most shooters persist with a person pis