Release of the cover strap causes {HEAD ~ movement} of {TAIL ~ the hinge} by the spring to position the magazine in a position for facilitating one handed loading of the magazine into an automatic pistol by the user 
of
Release of the cover strap causes { HEAD ~ movement } of { TAIL ~ the hinge } by the spring to position the magazine in a position for facilitating one handed loading of the magazine into an automatic pistol by the user
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH