KynSHOT Precision Carbine Recoil Damper for 9mm – Heavy Damped
The KynSHOT RB5015HD Heavy Damped hydraulic recoil buffer is engineered for pistol-caliber carbines that need increased shock absorption and more aggressive recoil control. Its heavier damping characteristics are designed for higher-stress PCC configurations, including suppressed systems, hotter ammunition, and builds using barrels 8 inches or longer.
KynSHOT’s patented hydraulic system absorbs energy from the rearward movement of the bolt, helping reduce felt recoil by up to 30% while minimizing bolt speed, bolt bounce, muzzle rise, and sight movement. The result is smoother cycling and faster target reacquisition compared with a conventional solid buffer.
The RB5015HD uses high-strength 17-4 stainless steel construction with Mil-Spec hydraulic fluids and seals for durability across a wide operating-temperature range. Its length is specifically tuned for PCC applications to help control bolt travel without requiring a separate spacer in a standard 7-inch-deep carbine receiver extension.
Features
- Heavy-damped hydraulic recoil system
- Reduces felt recoil by up to 30%
- Helps reduce bolt speed and bolt bounce
- Designed for suppressed and higher-stress PCC applications
- Promotes reduced muzzle rise and sight movement
- Helps improve shot recovery
- Corrosion-resistant construction
- Full-auto rated
- Made in the USA
Specifications
- Platform: Pistol-Caliber Carbine
- Primary Caliber: 9mm
- Additional Compatible PCC Calibers: .40 S&W / .45 ACP / 10mm
- Buffer Type: Heavy-Damped Hydraulic
- Weight: 6.0 oz
- Overall Length: 4.35″
- Compressed Length: 3.90″
- Diameter: 0.76″
- Material: 17-4 Stainless Steel
- Receiver Extension: Mil-Spec Carbine, 7″ Internal Depth
- Operating Temperature: -30°F to +150°F
- Full-Auto Rated: Yes
- Manufacturer Part Number: RB5015HD
Compatibility Note
KynSHOT recommends the RB5015HD for 9mm PCCs with 8-inch or longer barrels and for suppressed PCC configurations. It works with virtually any buffer spring and with A5/AR-10 receiver extensions with a 7.75-inch internal depth when used with the appropriate KynSHOT spacer weight.
For CMMG Radial Delayed Blowback systems, KynSHOT states that no spacer weight is required with an A5/AR-10 tube. However, when using a carbine-length buffer tube with a CMMG Radial Delayed Blowback bolt carrier group, KynSHOT recommends the RB5000HP instead.



