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