RUMORED BUZZ ON COLT M4 CARBINE MAGPUL SL GRAY

Charlie's supplies new higher receivers, the manufacturing facility rifle take-offs have check fired by Colt.  Upper receivers are choose-offs from out on the box rifles as well as are bought as upper receiver assemblies.  Each are 100% identical.  We do not ship in Colt manufacturing unit box.The advantage of the folding front sight is obvious