A multi-stage buffer structure and a large-caliber sniper rifle

Abstract

The invention discloses a multi-stage buffer structure, comprising a recoil brake, a buffer spring and a hydraulic buffer. The recoil brake is connected to the front end of a barrel component. The buffer spring is sleeved on the barrel component and placed in a receiver, comprising a primary buffer spring and a secondary buffer spring. A first baffle is provided between the primary buffer spring and the secondary buffer spring, and a second baffle is provided at the rear end of the secondary buffer spring. The hydraulic buffer is arranged in the receiver and below the barrel component. The spring force of the primary buffer spring is much smaller than the spring force of the secondary buffer spring. When the weapon is fired, the barrel component moves backward to compress the primary buffer spring to achieve a first-stage buffer. When a projectile exits a barrel mouth, gunpowder gas in a chamber acts on the recoil brake to generate a forward force to slow down the backward movement of the barrel component to achieve a second-stage buffer. When the projectile exits a recoil brake mouth, the barrel component moves backward to compress the secondary buffer spring to achieve a third-stage buffer. Under the action of inertia, the barrel component moves backward to compress the hydraulic buffer to achieve a fourth-stage buffer. The invention also discloses a large-caliber sniper rifle.

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