The Spike’s Tactical ST-T3 Heavy Buffer (brand part number SLA00T3) is built for AR-platform rifles that suffer from overgassing, run suppressed, or are configured for full-auto fire, using three sliding solid weights cut from tungsten bar stock and topped off with a Mil-Spec bumper. Unlike hydraulic buffers, the ST-T3 has no fluid to leak out, making it essentially maintenance free. It’s designed around .223/5.56 but functions in all AR calibers, delivering a firmer recoil impulse, eliminating bolt bounce, reducing muzzle rise on full-auto fire, and cutting down on felt recoil. Each buffer is laser engraved with the Spike’s Tactical logo.

Key Specifications

• Built as a Heavy (T3) weight buffer in Spike’s Tactical’s lineup.
• Uses three sliding tungsten weights topped with a Mil-Spec bumper.
• Constructed with a black anodized aluminum body.
• Designed for machine guns, suppressed weapons, and overgassed rifles.
• Contains no fluid, making it maintenance-free with no leak risk.

Frequently Asked Questions

What calibers does this buffer work with? It’s designed for .223/5.56 but works in all AR calibers.

Does this buffer need any maintenance? No, because it has no fluid to leak out, it’s essentially maintenance free.

What problems does a heavy tungsten buffer solve? It’s built for overgassed rifles, suppressed builds, and machine guns, helping eliminate bolt bounce, reduce muzzle rise, and cut felt recoil.

Buy the Spike’s Tactical ST-T3 Heavy Tungsten Buffer, Multi-Caliber

Tame an overgassed or suppressed AR build with a heavy tungsten buffer. Order the Spikes Tactical ST-T3 buffer from our AR buffer system lineup, shipped fast from our Lubbock, Texas gun shop.