віддача з запізненням (вільного затвора)
retarded blowback method
retarded tail fin
retarded action fuze
accelerated blowback method
blowback
blowback operation
blowback-operated weapon
straight blowback method
straight blowback-operated small arms
blowback principle
inertia blowback action
fuel blowback
delayed blowback
delayed blowback action