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