ствол з казенником
assembly (assy)
breech end of barrel
barrel assembly (barrel group)
automatic heavy barrel rifle / heavy barrel automatic rifle
observation and fields of fire, avenues of approach, key and decisive terrain,obstacles, and cover and concealment (OAKOC)
clearance between barrel and forearm
breech
breech face
breech mechanism
breech ring (of firearm)
breech screw
breech-loading gun
lever breech mechanism (LBM)
breech loaded
breech piece socket
breech boresight
breech block pivoted below the level of the chamber
closed-breech scavenger system
blow-back breech block
breech assembly
breech blast
breech block
breech carrier plate
breech casing
breech casing (of quick-firing ordnance)
breech chamber
breech cleaning brush
breech detail
breech end
breech end of bore
breech loader
breech loading (of ordnance)