Geissele Automatics Super 42 Buffer/Spring H1 (05-495)

The Geissele Automatics Super 42 Buffer/Spring H1 combo is engineered to dial in the reliability and longevity of your AR-15 carbine. Where a standard buffer spring wears out and loses its snap, the Super 42's braided three-strand design works like a shock absorber—each strand flexes independently to distribute energy and dampen harmonic vibration rather than letting it slam into your receiver. That means less wear on internals, better round feeding from the magazine (especially with steel-case ammo or when your gun's running dirty), and no more of that annoying spring twang rattling through your shoulder.

The H1 buffer included in this combo is tuned to work with carbine-length receiver extensions and delivers about 15% more return force than stock springs, helping you strip rounds reliably when conditions aren't ideal. Because the three strands absorb and release energy separately, the spring resists the creep and force loss that standard coils suffer over thousands of rounds. You're looking at a buffer system built to outlast the gun.

Straightforward to install on any AR-15 carbine—just verify you're running a standard carbine-length tube (this one doesn't play with rifle-length or A5 extensions). If you shoot competition, run a duty rifle, or just want your hunting AR to cycle harder and last longer, the Super 42 is a proven upgrade that works.

Key Features

• Braided three-strand spring design reduces vibration and extends spring life
• Independent strand flex acts as a harmonic damper and energy absorber
• Approximately 15% stronger average return force than standard buffer springs
• Improved reliability with dirty weapons and steel-case ammunition
• Eliminates spring resonance (twang) felt through the buttstock
• Includes H1 buffer assembly ready to install
• Designed for carbine-length receiver extensions

Specifications

Frequently Asked Questions

Will the Super 42 work with my rifle-length or A5 buffer tube?

No. The Super 42 Buffer/Spring H1 combo is designed exclusively for carbine-length receiver extensions. It is not compatible with rifle-length or A5 buffer tubes.

What's the advantage of the braided three-strand design?

The three independent strands flex separately from each other, allowing them to absorb and distribute energy more effectively than a solid coil spring. This reduces vibration, minimizes spring fatigue, and helps the spring maintain its force over a longer service life—plus it eliminates that annoying spring resonance you'd feel through the stock.

Does the Super 42 improve reliability with steel-case ammo or dirty guns?

Yes. The approximately 15% stronger average return force helps strip rounds from the magazine more reliably in less-than-ideal conditions, whether you're running steel-case ammunition or operating with a gun that hasn't been cleaned recently.

What buffer is included with this combo?

An H1 buffer assembly is included and ready to install. It's matched to work with the Super 42 spring on carbine-length tubes.