This KynSHOT hydraulic recoil buffer is engineered for AR-10 rifles that use an AR-10-length or A5 buffer tube with a 7.75-inch internal depth (KynSHOT part no. RB5005). It drops in as a direct replacement for a standard buffer and works with all AR-10 buffer springs. KynSHOT builds it around patented technology that absorbs the energy of the bolt carrier’s rearward travel, which helps prevent bolt bounce during chambering. Builders running a .308-pattern collapsible-stock rifle get a smoother cycle and less muzzle rise without changing the rest of the buffer system. It is made in the USA.

Key Specifications

• The platform is AR-10 rifles with an AR-10-length or A5 buffer tube, the tube style this buffer was engineered around.
• Buffer tube internal depth is 7.75 inches, which separates it from the 7-inch tube used on AR-15 collapsible stocks.
• Weight is 5.0 ounces, a heavier hydraulic unit sized for the longer AR-10 carrier travel.
• Overall length is 3.65 inches, the extended length of the hydraulic body.
• Length when compressed is 3.25 inches, the working stroke of the buffer in use.
• Buffer diameter is 0.76 inch, sized for the AR-10 buffer tube bore.
• Construction is 17-4 stainless steel throughout, built from military-grade materials and processes for corrosion resistance.
• The unit uses mil-spec hydraulic fluids and seals, so the damping behaves consistently shot after shot.
• Operating temperature is certified from -30F to +150F, covering cold-weather and summer range use.
• KynSHOT states felt recoil is reduced by 30% or more, which also helps cut muzzle rise and speeds up target reacquisition.

Frequently Asked Questions

Will this buffer fit an AR-15? No. It is designed for AR-10 rifles with a buffer tube that measures 7 3/4 inches inside, while AR-15 collapsible tubes measure 7 inches inside. KynSHOT recommends measuring the internal length of the buffer tube on your rifle to confirm.

Do I need a special spring? No. It is compatible with all AR-10 buffer springs and installs as a drop-in replacement for the standard buffer.

What does a hydraulic buffer do? It absorbs the recoil energy from the bolt carrier’s rearward movement, which helps prevent bolt bounce during chambering and reduces felt recoil and muzzle rise.

Buy the KynSHOT AR-10 Hydraulic Recoil Buffer for Collapsible Stocks

If your AR-10 build feels harsh on the shoulder, a hydraulic buffer is one of the least invasive changes you can make, since nothing else in the rifle has to be touched. This is the 7.75-inch version for AR-10-length tubes, so check your tube depth first and the rest is a swap. Browse more AR buffer system parts or order it from our Lubbock, Texas gun shop for fast, insured shipping.