5 SIMPLE TECHNIQUES FOR 20 INCH COLT UPPER

The present-day M16/M4 rifle is created around the notion of modularity. Most of the BCM® flat major uppers aspect a USGI style laser etched T-marks to supply addressing with the remounting of tactical add-ons for example optics, laser sights, and many others.  It is a new upper receiver team, taken off an entire Colt rifle.  Ships in army grade