Spikes Tactical ST-T1 Tungsten Heavy Buffer

The Spikes Tactical ST-T1 Tungsten Heavy Buffer is a drop-in replacement for standard carbine buffers that provides a firmer recoil impulse and smoother cycling. CNC-machined from solid billet aluminum and fitted with sliding tungsten weights, the ST-T1 weighs 3 oz (85 g) and uses a Mil-Spec bumper. It is described by the manufacturer as designed for .223/5.56 and is intended for use in machine guns, suppressed weapons, and rifles that suffer from overgassing. The buffer is maintenance-free and contains no fluids to leak.

Key Specifications

• Material is Aluminum/Tungsten.
• Finish is listed as Aluminum/Tungsten per manufacturer-supplied attributes.
• Product type is a Heavy Buffer.
• Model is ST-T1.
• Color is Black.
• Weight is 3 oz (85 g).
• Contains three sliding tungsten weights.
• Construction is CNC machined from solid billet aluminum bar stock.
• Includes a Mil-Spec bumper.
• Intended for machine guns, suppressed weapons, and overgassed rifles.

As a durable, maintenance-free upgrade, the ST-T1 offers a practical solution for shooters seeking firmer cycling control and reduced bolt bounce in applications that can benefit from added buffer mass. Its billet construction and tungsten weights provide a robust, repeatable component for AR-platform systems where a heavier buffer is preferred.