KynSHOT RB5000L Recoil Buffer .300 Blackout

Description

The KynSHOT RB5000L is a hydraulic recoil buffer engineered for AR-15 platforms chambered in .300 Blackout and for under‑gassed or suppressed applications. It is optimized for use with a Mil‑Spec style carbine buffer tube (7″ internal depth) and is lighter than standard AR-15 buffer systems to require less force to cycle. The RB5000L pairs with any style buffer spring but generally performs best with reduced‑power springs and is intended for rifles that do not reliably lock back on the last round with a standard or heavy buffer. Manufacturer test data reports up to a 30% reduction in felt recoil and reduced bolt bounce when properly installed.

Key Specifications

• The model is RB5000L and is listed as a recoil buffer for AR platforms.
• The product type is a hydraulic recoil buffer designed to absorb the bolt carrier’s rearward impulse.
• Designed to fit AR-15 platforms using a Mil‑Spec carbine buffer tube.
• Optimized for .300 Blackout applications, particularly low‑velocity/subsonic loadings.
• The material is listed as stainless steel for the primary construction.
• The finish color is described as stainless.
• The listed dimensions are 1.35 x 4.70 x 8.00 (manufacturer specification table).
• The product pairs best with reduced‑power buffer springs though it can work with any style spring.
• The buffer is intended for carbines with a 7″ internal depth Mil‑Spec style tube (carbine buffer tube).

The RB5000L provides a straightforward mechanical solution for shooters running low‑velocity .300 Blackout loads or under‑gassed AR‑15 builds who need a lighter buffer to restore reliable cycling and consistent ejection. Its hydraulic action reduces felt impulse and bolt bounce, helping the rifle run more smoothly shot to shot while maintaining a clean, durable stainless finish. For operators who value refined cycling behavior in suppressed or specialized AR platforms, the RB5000L offers a purpose‑built option without unnecessary complexity.