The breech block has at least one bore which receives a locking element supported for {HEAD ~ radial movement} in {TAIL ~ the bore} 
in
The breech block has at least one bore which receives a locking element supported for { HEAD ~ radial movement } in { TAIL ~ the bore }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL