Geissele Super Duty MOD1-A 8" .300BLK | SBR

The Geissele Super Duty MOD1-A 8" .300 Blackout SBR is a compact, semi-automatic rifle designed for AR-platform users seeking a short-barrel configuration with ambidextrous controls. Featuring an 8" cold hammer forged, chrome-lined barrel and a pistol-length gas system, this rifle is built for compatibility with both supersonic and subsonic .300 BLK ammunition. The fully ambidextrous billet lower receiver includes mirrored controls for magazine release and bolt operation, supporting ease of use for both left- and right-handed shooters.

This model incorporates a proprietary gas system designed to balance gas flow without user adjustment, along with a free-float MK16 handguard for accessory mounting. Additional features include a two-stage trigger with a hybrid bow profile, coated bolt carrier group, ambidextrous charging handle, and modular furniture. Available in Black or Desert Dirt Color (DDC), this SBR platform is configured as a complete rifle system for compact applications.

Specifications

• Caliber: .300 AAC Blackout
• Barrel length: 8"
• Barrel material: Cold hammer forged, chrome-lined
• Twist rate: 1:7
• Gas system: Pistol length with proprietary multi-port design
• Gas block: Low-profile compact gas block
• Receiver set: Billet upper and fully ambidextrous lower
• Handguard: 7" MK16 free-float rail
• 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: Braided buffer spring with H1 buffer
• Buffer tube: 7075-T6 mil-spec with QD endplate
• Stock: B5 Systems Enhanced SOPMOD
• Grip: A17 pistol grip
• Muzzle device: HUXWRX flash hider (5/8x24 thread)
• Overall length: 25 3/8" (collapsed) / 28 1/2" (extended)
• Weight: Approx. 5.7 lbs
• Finish options: Black or DDC (Desert Dirt Color)