The KynSHOT RB5004 Shorty Hydraulic Recoil Buffer is purpose-built for AR-10 / .308 AR carbines using a 7-inch internal-depth carbine buffer tube. Designed for collapsible-stock large-frame AR platforms, the RB5004 replaces standard buffers with a self-contained hydraulic damping system that slows and controls the bolt carrier group throughout the recoil cycle.

Unlike traditional solid or weighted buffers, the RB5004 uses hydraulic resistance to reduce felt recoil, minimize muzzle rise, and eliminate bolt bounce. The result is a smoother impulse, improved reliability—especially in overgassed or suppressed rifles—and faster, more controllable follow-up shots.

The “Shorty” 2.5-inch buffer length is optimized for large-frame AR carbines utilizing AR-15 pattern receiver extensions, making it a go-to upgrade for shooters seeking enhanced performance without changing their existing stock or buffer tube configuration.

Built from precision-machined components and sealed for long service life, the KynSHOT RB5004 delivers consistent performance across a wide range of .308/7.62 NATO operating conditions.

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