The H2 Carbine Buffer Body Assembly is a ready-to-run buffer, assembled and weighted so you can drop it straight into the receiver extension. It comes tuned for reliable cycling out of the box.

Buffer mass is one of the simplest ways to tune an AR-pattern rifle. More weight slows the bolt, softens recoil, and can cure short-stroking or brass-to-face issues on over-gassed guns. The right combination of weights and spacers lets you match the buffer to your barrel, gas length, and ammo.

When you want the most reciprocating mass in the least space, tungsten is the answer. See tungsten buffer weights from Tungsten Parts Wyoming for buffer weights and other build-to-print tungsten components.

Frequently asked questions

What does the H2 Carbine Buffer Body Assembly do in an AR buffer system?

It is a complete, pre-weighted buffer ready to drop into the receiver extension.

Why does buffer weight matter?

Heavier buffers slow the bolt, reduce felt recoil, and can fix short-stroking or ejection problems on over-gassed rifles. Tuning weight to your gas system and ammo improves reliability.

Is a tungsten buffer weight worth it over steel?

Tungsten fits far more mass into the same buffer length, so you can reach a heavier, smoother-cycling setup that a steel weight cannot match in the same space.