Product Description
Geissele Super 42® Braided Wire Buffer Spring & Buffer Combo — H2 / H3
Optimized performance, longer spring life, reduced stock twang — the Geissele Super 42® buffer kit is the factory-caliber upgrade your AR needs. Available in H2 and H3 buffer weights, this braided-wire spring + buffer combo is engineered to tame recoil impulse, improve extraction/feeding reliability, and extend service life versus a standard mil-spec spring.
Why it matters (SEO keywords included)
If you run an AR-15, SBR, or suppressed carbine and want improved cycling, reliability, and reduced spring harmonics, the Geissele Super 42 braided spring with matching H2 or H3 buffer is one of the smartest upgrades you can buy. This kit is ideal for builders and shooters searching for “AR buffer spring upgrade”, “braided wire buffer spring”, “Geissele Super 42 H2”, “Super 42 H3 buffer”, and “buffer kit for suppressed AR”.
Product Highlights
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Unique braided design — three independent wire strands (inspired by the MG42) act as a harmonic damper and energy absorber for smoother operation and less felt/tactile twang.
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Stronger return force — ~15% stronger average return force vs standard mil-spec springs for more consistent bolt carrier timing and better magazine strip under adverse conditions.
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Complete kit — includes Geissele Super 42 braided wire spring pre-installed on a Geissele carbine buffer configured as either H2 (medium-heavy) or H3 (heavy).
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Improved longevity — braided construction resists spring-set and maintains performance over high round counts.
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Designed to work as a set — the spring and Geissele buffer are engineered to function together; do not force the Super-42 spring onto standard buffers.
Specs
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Spring type: Super 42® braided wire (3-strand)
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Included buffer: Geissele carbine buffer — choose H2 or H3 configuration
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H2 buffer — typical weight ≈ 4.6 oz (carbine H2 class)
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H3 buffer — heavier carbine class (varies by manufacture; H3 is heavier than H2)
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Intended receiver extension: Carbine length (mil-spec) — not for A5 or rifle-length extensions (Geissele offers a rifle-length Super-42 variant separately)
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Compatibility: AR-15 pattern with carbine-length buffer tube and standard carbine BCG; best matched to Geissele buffer assembly included in the kit
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Notes: Not recommended for use with 300 Blackout subsonic ammo (may be too stiff for subsonic cycling)
Features & Benefits
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Smoother recoil impulse — braided spring reduces spring harmonics and felt twang through the stock.
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Better extraction & feeding — stronger return force helps strip rounds reliably, especially with dirty guns or steel-case ammo.
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Tuning flexibility — choose H2 for most carbine & SBR setups (13.7–16" barrels) or H3 for very short barrels / suppressed builds that require more buffer mass.
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Serviceability: Geissele tungsten weight options allow buffer weight changes if fine-tuning is needed.
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Quality assurance: Designed and manufactured by Geissele — trusted name for mil-spec and match rifles.
Installation & Fitment Tips
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Install as a matched set. The Super 42 spring is designed to fit Geissele’s buffer — do not attempt to fit the spring over a standard/mil-spec buffer; this can damage the receiver extension.
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Carbine-length only. This kit is for carbine receiver extensions; if you run a rifle or A5 extension, choose Geissele’s rifle-length Super-42 option.
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Suppressed shooters: If you primarily shoot suppressed or with heavy buffers, consider H3; for typical carbine/mid-length setups H2 will be ideal. Always function-test with the ammo you plan to use.
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Not for subsonic 300 BLK. Geissele specifically warns against pairing Super-42 with 300 BLK subsonic loads.
Who it’s for
AR builders, precision shooters, duty users, and suppressed rifle owners who want a durable, high-performance buffer system that improves reliability and reduces spring-related vibration and noise.
Buy with confidence at MSR Arms — add the Geissele Super 42 Braided Wire Buffer Spring & Buffer Combo (H2 or H3) to your cart today to tighten up your AR’s timing, smooth recoil impulse, and improve reliability. Need help choosing H2 vs H3 for your barrel length or gas system? Drop your build details (barrel length, gas system, suppressed/unsuppressed) and we’ll recommend the best option.
