Geissele Super 42 Braided Buffer Spring and H3 Buffer Combo

The Geissele Super 42 H3 combo represents the ultimate solution for heavily suppressed AR-15 builds and overgassed short-barrel configurations. Combining the innovative three-strand braided spring design with the heaviest standard buffer weight (5.0-5.4 oz), this system provides maximum reciprocating mass to slow bolt carrier velocity and reduce wear on critical components. The H3 is particularly well-suited for dedicated suppressor hosts running 10.3" to 11.5" barrels where excess gas is a significant concern.

The braided wire spring design eliminates all spring reverberations while providing 15% stronger return force than standard mil-spec springs. The three independent wire strands flex separately, creating a harmonic damping effect that smooths recoil and reduces mechanical noise transmitted to the shooter. This combination of heavy buffer and enhanced spring ensures reliable cycling while significantly reducing felt recoil and bolt carrier velocity, extending the service life of the bolt, carrier, and receiver.

The H3 buffer weight is ideal for builds that remain heavily overgassed even with adjustable gas blocks turned down, or for shooters who run their rifles suppressed 100% of the time. The additional mass compared to H2 (approximately 0.5 oz heavier) makes a noticeable difference in taming aggressive gas systems, though it requires adequate gas flow to function reliably. Like all Super 42 systems, this is designed exclusively for carbine-length buffer tubes and is not recommended for .300 Blackout subsonic ammunition due to the powerful spring return force.