11. Browning had previously sold the rights to his successful locked-breech recoil system . 12. Kilbourn solved this problem by redesigning the recoil system completely rather than modifying it. 13. The recoil system consisted of a hydraulic recoil buffer and spring-driven recuperator. 14. It replaced the obsolete 21 cm M�rser 99, which lacked a recoil system . 15. These guns are air-cooled and use a gas blow-back recoil system . 16. Other innovations on the ship design included a collapsible funnel and an improved recoil system . 17. The carriage included the recoil system , laying arrangements, fuse setting and loading machinery. 18. The capability to separate in energy in the recoil system arising from small depth intervals. 19. It lacked a modern recoil system and was virtually obsolescent upon its introduction in 1904. 20. The recoil system ( buffer and recuperator ) is mounted on the cradle above the barrel.
