The Geissele Super Duty MOD1-A 5.56 SBR is a semi-automatic rifle designed for AR-15 platforms, available in 10.3″, 11.5″, and 12.5″ barrel lengths. Chambered in 5.56 NATO, this short-barrel configuration features a cold hammer forged, chrome-lined barrel and a carbine-length gas system. The rifle includes a free-float MK16 handguard and is compatible with standard AR-pattern accessories, making it suitable for a range of applications including range use and general-purpose shooting.
This model incorporates a fully ambidextrous billet lower receiver with mirrored controls for magazine release and bolt operation. Additional features include a two-stage trigger with a flat-profile bow, coated bolt carrier group, ambidextrous charging handle, and adjustable stock. The system is configured with a tuned gas and buffer setup to support consistent cycling. Available in Black or Desert Dirt Color (DDC), this SBR is offered as a complete rifle platform.
Specifications
- Caliber: 5.56 NATO
- Barrel lengths available: 10.3″, 11.5″, 12.5″
- Barrel material: Cold hammer forged, chrome-lined
- Twist rate: 1:7
- Gas system: Carbine length
- Gas block: Low-profile compact gas block
- Receiver set: Billet upper and fully ambidextrous lower
- Bolt carrier group: Included, coated for wear resistance
- Bolt: Carpenter 158 steel (enhanced design)
- Charging handle: Ambidextrous (Airborne Charging Handle)
- Trigger: SSA-E X two-stage (Lightning Bow)
- Safety: Configurable safety selector
- Buffer system: Super 42 braided spring with H3 buffer
- Buffer tube: Mil-spec 6-position, 7075-T6 with QD endplate
- Stock: B5 Systems Enhanced SOPMOD
- Grip: A17 pistol grip
- Muzzle device: HUXWRX flash hider (1/2×28 thread)
- Weight: Approx. 6.3 – 6.45 lbs (depending on configuration)
- Finish options: Black or DDC (Desert Dirt Color)
