Product DescriptionThe KynSHOT RB5000L Recoil Buffer is a hydraulic buffer system engineered to help soft-cycling, under-gassed AR-15 platforms run smoother and more reliably when used with a Mil-Spec style carbine buffer tube (7" internal depth). Designed to require less force to cycle than KynSHOT's standard AR-15 buffer system, it is an excellent match for low-velocity ammunition such as .300 Blackout. The RB5000L is a drop-in replacement and can be used with any buffer spring, though it typically performs best with reduced-power springs. It is intended for rifles that struggle to lock back on the last round with a standard buffer system or a heavier buffer.Product Highlights Hydraulic recoil buffer optimized for softer cycling and under-gassed AR-15 rifles, including .300 Blackout applications Drop-in replacement for standard AR-15 carbine buffer systems (Mil-Spec carbine buffer tube with 7" internal depth) Designed to reduce felt recoil (up to 30%) for improved control and faster follow-up shots Pairs with any buffer spring; commonly performs best with reduced-power springs for low-velocity loads Not intended for pistol-caliber carbines (PCCs)Specs Brand: KynSHOT Manufacturer Part Number: RB5000L UPC: 854476005072 Type: Hydraulic recoil buffer Platform Compatibility: AR-15 Buffer Tube Requirement: Mil-Spec style carbine buffer tube (7" internal depth) Intended Use: Soft-cycling / under-gassed AR-15 rifles; optimized for .300 Blackout low-velocity loads Do Not Use: PCCs Material: 17-4 stainless steel Weight: 4 oz Country of Manufacture: USADisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.