Breakthrough Clean Technologies Lower Block AR-15 Green/Black

Breakthrough Clean Technologies Lower Block AR-15 Green/Black. By inserting it into the magwell it provides a snug secure fit effortlessly locking in place using the receiver's magazine lock. This block can be easily clamped onto any vise enabling convenient and stable cleaning and maintenance. It features an integrated hammer stop tool safeguarding the receiver from damage during dry firing. As a bonus this block comes with a Pivot Lock ensuring easy access to the barrel and chamber. Elevate yo