Additionally, the means for cooperating with the retention catch further including {HEAD ~ means} for securing {TAIL ~ the adapter} in place within the secondary receiver chamber when the magazine catch of a rifle is moved out of the through opening of the adapter 
for securing
Additionally , the means for cooperating with the retention catch further including { HEAD ~ means } for securing { TAIL ~ the adapter } in place within the secondary receiver chamber when the magazine catch of a rifle is moved out of the through opening of the adapter
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL 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