The Spikes Tactical SLA00T1 Heavy Buffer ST-T1 Multi-Caliber Black Anodized Aluminum/Tungsten AR-Platform delivers a firmer recoil impulse and is engineered for machine guns, suppressed weapons, and rifles that suffer from overgassing, all while remaining maintenance free with no fluids to leak. Weighing 85g (3oz) and crafted from solid billet aluminum, the body is CNC machined for exceptional strength and durability, and laser engraved with the Spike's Tactical Logo. Each ST-T1 buffer houses three sliding solid tungsten weights topped with a Mil-Spec bumper, a design that eliminates bolt bounce, helps control muzzle rise during full-auto fire, and significantly reduces felt recoil across calibers. Although designed for the popular .223/5.56 platform, its multi-caliber compatibility makes it a versatile upgrade for AR-pattern rifles seeking improved recoil management and steadier shot placement. This heavy buffer optimizes gas system timing and reliability on rifles and suppressed configurations, offering a robust, maintenance-friendly solution for shooters demanding smoother, controlled operation without compromise.