The Kynshot Hydraulic Recoil Buffer (brand part number RB5007) is a carbine-length buffer built for AR-9 pistol-caliber carbines running a collapsible stock, engineered from 17-4 stainless steel with a hydraulic shock absorber that dampens the bolt’s impact at the rear of its travel. Kynshot tuned its weight and length so the buffer cycles reliably with any 9mm ammunition, softens felt recoil, smooths out the action, and stops just behind the bolt catch. It’s built to be one of the smoothest-running, softest-recoiling 9mm buffers on the market.

Key Specifications

• Built for the AR-9 platform with a collapsible stock.
• Chambered for 9mm ammunition.
• Machined from 17-4 stainless steel.
• Uses hydraulic shock absorption to dampen bolt impact.
• Measures approximately 8 inches long.
• Tuned to stop just behind the bolt catch for reliable cycling.
• Reduces felt recoil and smooths the action’s cycling.

Frequently Asked Questions

What is this buffer made from? 17-4 stainless steel.

Will it run any 9mm ammo? Yes, Kynshot tuned its weight and length to cycle reliably across 9mm ammunition types.

What does the hydraulic action do? It dampens the bolt’s impact at the rear of travel, softening recoil and smoothing the action.

Buy the Kynshot Hydraulic Recoil Buffer, AR-9 Carbine

Smooth out your AR-9’s recoil impulse with a purpose-built hydraulic buffer. Order it from our Kynshot lineup, part of our AR buffer systems selection, at our Lubbock, Texas gun shop for fast, direct shipping.