FIREARM Russian patent published in 2014 - IPC F41A21/06 F41A3/20 F41A3/60 F41C7/00 

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to small arms. Proposed gun comprises breech box, top barrel, lock and detachable magazine, bottom barrel and its detachable magazine and spring-loaded firing pin. Bottom barrel is secured at post bore in breech box to turn in horizontal plane. For fire from bottom barrel this gun is equipped with case, its top having a through bore and groove to fit bottom barrel lock in place while its bottom has detachable magazine seat and groove for spring-loaded lever locking said magazine. Breech top part of bottom barrel is provided with ledge to make a fire thrust interacting with groove made in said breech for top barrel with inclined bore communicating firing pin seat and groove and designed to receive the pusher. At top barrel locked breech said pusher interacts with striker arranged in inclined slot of bottom barrel breech.

EFFECT: easy and friendly use, decreased overall dimensions.

4 cl, 8 dwg