In a proximate area of the support pin 12, the breech block 4 is formed with {HEAD ~ a shoulder} 17 for {TAIL ~ cooperation} with a stop face 18 of a hook shaped stop member 13 which is positioned at the barrel distant end of the stock 3 
for
In a proximate area of the support pin 12 , the breech block 4 is formed with { HEAD ~ a shoulder } 17 for { TAIL ~ cooperation } with a stop face 18 of a hook shaped stop member 13 which is positioned at the barrel distant end of the stock 3
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL 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