The adapter includes {HEAD ~ a mechanism} which cooperates with a retention catch of a rifle to effect registration of {TAIL ~ the adapter} with the rifle and for allowing the magazine cartridge to be releasably connected to the adapter 
The adapter includes { HEAD ~ a mechanism } which cooperates with a retention catch of a rifle to effect registration of { TAIL ~ the adapter } with the rifle and for allowing the magazine cartridge to be releasably connected to the adapter
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH