Kynshot RB5015HD 9mm AR-9 PCC Heavy Damped Hydraulic Recoil Buffer - Stainless Steel

The Kynshot RB5015HD is a heavy damped hydraulic recoil buffer engineered specifically for 9mm AR-9 pistol-caliber carbines. Designed for PCC builds running barrel lengths of 8 inches and up or any suppressed 9mm AR upper, the RB5015HD drops into a standard Mil-Spec carbine buffer tube with a 7-inch internal depth, delivering controlled cycling and a noticeably softer recoil impulse than a standard spring buffer.

The body is machined from 17-4 PH stainless steel for high strength and corrosion resistance, tipping the scales at 6 ounces with a compressed length of 3.90 inches. Internally, the buffer is filled with Mil-Spec hydraulic fluids and sealed to operate across an ambient temperature range of -30 degrees F to 150 degrees F, giving reliable damping whether you are shooting in the cold of winter or during extended range sessions. The heavy damping profile reduces felt recoil by roughly 30% while also knocking down muzzle flip for faster, more accurate follow-up shots.

The RB5015HD is built to handle the harder bolt impact that comes with high-pressure 9mm loads and suppressed blowback cycling. It works across all 9mm loadings, from light target ammo to the heaviest supersonic hard-cast projectiles, and protects your carbine by absorbing rearward bolt energy before it reaches the back of the buffer tube. For PCC competitors, suppressed AR-9 shooters, and anyone running a heavy-barrel 9mm build, the Kynshot RB5015HD is a turnkey upgrade that transforms how the platform shoots.