Geissele Super Duty MOD1-A 5.56 SBR - Short Barreled Rifle - 11.5" - No Mags - DDC

The Geissele Super Duty MOD1-A 5.56 SBR is the ambidextrous evolution of the Super Duty MOD1 platform — fully ambidextrous controls including a left-side magazine release and right-side bolt catch/release, Geissele Stressproof Bolt made from Carpenter 158+ with five times the fatigue life of a mil-spec bolt, SSA-E X two-stage trigger with Lightning Bow, HUXWRX QD flash hider for seamless suppressor integration, and a CHF chrome-lined 11.5-inch barrel, in DDC (Desert Dirt Color) anodized finish.

The Geissele Super Duty MOD1-A is a semi-automatic 5.56 NATO SBR in DDC (Desert Dirt Color) anodized finish, featuring an 11.5-inch cold hammer forged chrome-lined barrel (1:7 twist, Geissele Tapered Profile, carbine gas, .067-inch gas port), Super Compact Gas Block, ambidextrous billet lower receiver, Super Duty M4 upper, 10.5-inch MK16 rail with Center Tab, SSA-E X trigger with Lightning Bow and Nanoweapon-coated internals, Airborne Charging Handle, HUXWRX Flash Hider-QD 556, Super 42 braided spring with H3 buffer, B5 Systems Enhanced SOPMOD stock, Geissele A17 grip, and Ultra Duty Lower Parts Kit. Length: 29" collapsed / 32.25" extended. Weight: approximately 6.45 lbs. Note: this is an NFA-regulated short-barreled rifle — Form 4 transfer required.

The MOD1-A's defining upgrade over the MOD1 is the fully ambidextrous control layout — a system designed not merely to accommodate left-handed shooters as an afterthought, but to enhance mechanical flow for all shooters under pressure. The left-side magazine release below the Maritime Bolt Catch allows left-handed mag changes without repositioning the support hand, while the right-side bolt catch and release buttons below the ejection port provide bolt manipulation from the shooting hand side. The dust cover doubles as a bolt catch actuator, and a separate release button sends the bolt forward — an intuitive system that, once learned, makes reloads and malfunction clearances faster and more consistent regardless of dominant hand. The Geissele Stressproof Bolt is the component that distinguishes the Super Duty's bolt carrier group from mil-spec alternatives: made from Carpenter 158+ steel developed directly with Carpenter Steel metallurgists to produce a cleaner, lower-impurity alloy than standard Carpenter 158, it is both stronger and more fatigue resistant — rated for five times the service life of a mil-spec bolt. The CHF chrome-lined barrel provides the bore wear resistance and corrosion protection of the cold hammer forging process with the long-term durability of chrome lining. The SSA-E X two-stage trigger provides a deliberate first stage and a clean, predictable second-stage break appropriate for a precision-capable SBR; the Lightning Bow and Nanoweapon-coated internals reduce felt weight and improve consistency. The HUXWRX Flash Hider-QD is fully compatible with the HUXWRX FLOW suppressor series, providing direct QD suppressor mounting without an adapter. The Super 42 braided buffer spring with H3 buffer manages bolt carrier velocity for reliable cycling across the range of 5.56 loads appropriate for an 11.5-inch platform. Integrated stainless steel QD inserts and Geissele QD Endplate support multiple sling configurations.

Caliber: 5.56 NATO. Barrel: 11.5", CHF, chrome-lined, Geissele Tapered Profile, 1:7 twist, carbine gas, .067" gas port. Rail: 10.5" MK16 with Center Tab. BCG: Reliability Enhanced with Stressproof Bolt (Carpenter 158+). Trigger: SSA-E X with Lightning Bow, Nanoweapon-coated. Charging handle: Airborne (ACH). Muzzle: HUXWRX Flash Hider-QD 556, 1/2x28. Buffer: Super 42 with H3. Stock: B5 SOPMOD. Grip: A17. Safety: Super Configurable. Lower: ambidextrous billet. Length: 29"/32.25". Weight: ~6.45 lbs. Finish: DDC (Desert Dirt Color) anodized finish. NFA: SBR — Form 4 required.

Fully ambidextrous controls — left-side mag release, right-side bolt catch/release, dust cover bolt catch — designed for faster reloads and malfunction clearances for both right and left-handed shooters. Stressproof Bolt from Carpenter 158+ provides five times the fatigue life of a mil-spec bolt. HUXWRX Flash Hider-QD provides direct FLOW suppressor compatibility without an adapter. SSA-E X with Lightning Bow delivers a crisp two-stage break for precision-capable SBR performance.

The right SBR for shooters who want the Super Duty platform's fully ambidextrous controls, Stressproof Bolt longevity, and HUXWRX suppressor integration in a 5.56 11.5-inch NFA package — in DDC (Desert Dirt Color) anodized finish.