Kynshot Hydraulic Buffer for .308 Collapsible Stocks

The Kynshot hydraulic buffer (brand part no. RB5005) is built for .308-pattern AR rifles running a standard collapsible stock setup. Kynshot engineers its hydraulic buffers to dampen the bolt carrier’s rearward impulse, which smooths out recoil and reduces the harsh, jarring cycling that heavier .308-caliber AR platforms are known for compared to a 5.56 build. Because it uses hydraulic dampening rather than a simple weighted mass, it reduces both felt recoil and wear on the receiver extension over time. This buffer is sized for standard collapsible carbine stocks, not a fixed rifle-length stock.

Key Specifications

• Overall length measures approximately 3.25 inches, sized for a standard collapsible stock buffer tube.
• Uses hydraulic dampening rather than simple weighted mass to smooth the bolt carrier’s rearward travel.
• Built specifically for .308-pattern AR rifles, where recoil impulse is heavier than a 5.56 build.
• Reduces felt recoil and receiver-extension wear compared to a standard buffer.

Frequently Asked Questions

What platform is this buffer built for? .308-pattern AR rifles running a standard collapsible stock.

How does a hydraulic buffer differ from a standard buffer? It uses hydraulic dampening to smooth the bolt carrier’s rearward impulse instead of relying on weighted mass alone.

Does it work with a fixed rifle-length stock? No, it is sized for a standard collapsible stock buffer tube.

Buy the Kynshot Hydraulic Buffer for .308 Collapsible Stocks

Order this Kynshot hydraulic buffer from Kynshot through our AR-15 buffer systems lineup. It ships fast from our Lubbock, Texas gun shop, fully insured.