THE BEST SIDE OF COLT M4 TROOPER 5.56MM 16"

This upper receiver traces its origins back some six several years to guns Colt manufactured with the SCAR (Special Operations Forces Fight Assault Rifle) system on the U.S. Exclusive Functions Command (SOCOM). It can be meant to obviate the necessity for just a different multiple-rail handguard for mounting accessories, affording ideal alignment o