| 摘要 |
831,378. Breech mechanism. BOFORS A. B. April 29, 1958 [June 7, 1957], No. 13565/58. Class 92 To permit the larger diameter of its gas exhaust funnel 6 to clear the breech opening for loading without unduly long travel of the breech-block 5 a recoilless firearm is characterized in that the exhaust funnel is fixed to the breech-block which slides in a breech ring 2 along an arcuate path 4 concave to the barrel. |
