The Spikes Tactical ST-T1 Heavy Buffer (brand part number SLA00T1) is built for machine guns, suppressed rifles, and any AR-platform gun that runs overgassed, giving those systems a firmer recoil impulse to work with. The body is CNC machined from solid billet aluminum bar stock and laser engraved with the Spike’s Tactical logo, and inside it carries three sliding tungsten weights topped off with a Mil-Spec bumper instead of the fluid-filled design some competitors use. Because there’s no fluid to leak, it’s maintenance-free for the life of the buffer. At 85 grams (about 3 ounces), the added mass helps eliminate bolt bounce, tames muzzle rise during full-auto fire, and cuts down on felt recoil. It’s designed around .223/5.56 but functions across other AR calibers as well.

Key Specifications

• Body is CNC machined from billet aluminum.
• Contains three sliding tungsten weights.
• Topped with a Mil-Spec bumper.
• Weighs 85 grams (about 3 ounces).
• No fluid to leak, making it maintenance-free.
• Helps eliminate bolt bounce.
• Reduces muzzle rise during full-auto fire.
• Cuts down on felt recoil.

Frequently Asked Questions

What is this buffer designed for? Machine guns, suppressed rifles, and overgassed AR-platform guns.

Does it work with calibers other than 5.56? Yes, it’s designed around .223/5.56 but functions across other AR calibers.

Buy the Spikes Tactical ST-T1 Heavy Buffer

Tame an overgassed or suppressed AR with a maintenance-free heavy buffer built to eliminate bolt bounce. Order this ST-T1 heavy buffer from Spikes Tactical through our gun parts selection, and our Lubbock, Texas team will get your order ready to ship as soon as it’s available.