A SIMPLE KEY FOR COLT M4 CARBINE MAGPUL SL GRAY UNVEILED

This upper receiver traces its origins again some six years to guns Colt created to the SCAR (Distinctive Operations Forces Fight Assault Rifle) plan in the U.S. Distinctive Operations Command (SOCOM). It really is meant to obviate the necessity for any different many-rail handguard for mounting extras, affording fantastic alignment of accessories