The trademark "AR15" or "AR-15" is registered to Colt Industries, which maintains that the locution should only http://www.ar15forsale.com be accustomed to refer to their products. Other manufacturers make AR-15 clones marketed under asunder designations, although colloquially these are sometimes also referred to by the terminology AR-15.

The magazine is not detachable, so to load the trash the shooter must extract the rear takedown pin, hinge the upper receiver on the anterior takedown pin, and load the now exposed magazine either with a stripper clip or by hand, then close. Popular lower receivers for this goal are manufactured by Stag Arms, Fulton Armory, Dane Armory, Mega, and Ameetec.