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