Geissele Super Duty Mod 1, 5.56mm, 11.5" Barrel, Black, Pistol

Geissele Super Duty MOD1 5.56 NATO Pistol, 11.5" Barrel, SBA3 Brace, Black

The Geissele Super Duty MOD1 11.5-inch pistol combines a cold-hammer-forged, chrome-lined 5.56 NATO barrel with the SSA-E X two-stage trigger, Reliability Enhanced Bolt Carrier Group and SB Tactical SBA3 brace. This black configuration, manufacturer SKU 08-561B, is a complete AR-pattern pistol built around a coordinated set of Geissele components.

A 10.5-inch MK16 rail, HUXWRX Flash Hider-QD 556, A17 grip and Airborne Charging Handle round out the configuration. The component selection makes this a distinctive Super Duty package, with attention to barrel construction, the operating system and the controls used most often. A magazine, optic and scope mount are not included.

Choose the black Geissele Super Duty MOD1 pistol at BattleHawk Armory for a professional-grade factory configuration with its SBA3 brace already included.

Cold-Hammer-Forged, Chrome-Lined Barrel

The 11.5-inch barrel uses the Geissele tapered profile and a 1:7 twist. Cold hammer forging forms the barrel around its internal tooling, while chrome lining supplies a durable interior surface. Both the barrel and the Forged Stressproof Bolt undergo high-pressure testing and magnetic-particle inspection, bringing specified inspection procedures to two central components.

The barrel is paired with a carbine-length gas system and Super Compact Gas Block. Its factory muzzle device is the HUXWRX Flash Hider-QD 556, mounted on 1/2x28 muzzle threads. The QD interface is for compatible HUXWRX suppressors; the exact suppressor model must match that interface.

Reliability Enhanced Bolt Carrier Group and Super 42 Buffer System

The Reliability Enhanced Bolt Carrier Group incorporates Geissele's Forged Stressproof Bolt made from Carpenter 158+ steel. This material specification and the bolt's inspection process distinguish the operating group from an unspecified standard assembly. The bolt carrier group is part of the complete factory package.

At the rear of the operating system, the Super 42 braided buffer spring works with an H3 buffer. A six-position, mil-spec 7075-T6 buffer tube includes a Geissele QD endplate. These are the supplied components for this 11.5-inch pistol configuration, providing a clear specification for owners who want to know exactly what is included.

SSA-E X Trigger and Purposeful Controls

The SSA-E X trigger uses a two-stage design with a wide Lightning Bow profile and Nanoweapon-coated components. Its two-stage action separates initial take-up from the final break, giving the trigger a distinct feel. The coated components are part of Geissele's approach to wear resistance and smooth operation.

The Super Configurable Safety is ambidextrous. An Airborne Charging Handle, checkered magazine release and Maritime Bolt Catch complete the control layout. The A17 grip adds the MOD1's updated grip shape, so the pistol's handling features extend beyond the trigger alone.

MK16 Rail, QD Sling Interfaces and SBA3 Brace

The 10.5-inch MK16 rail mates to the upper through the Geissele center-tab arrangement. Stainless steel QD inserts in the rail and the QD endplate provide dedicated sling attachment interfaces at the front and rear. The rail's length complements the 11.5-inch barrel while leaving the factory muzzle device forward of the handguard.

The SB Tactical SBA3 is a pistol brace and is included in this configuration. The pistol measures 27.75 inches with the brace collapsed and 30.375 inches extended, with an approximate weight of 6 pounds. Its black finish provides a consistent appearance across the main exterior components.

Included Components

• Geissele Super Duty MOD1 11.5-inch pistol in black
• SB Tactical SBA3 brace and Geissele A17 grip
• 10.5-inch MK16 rail with center tab and stainless steel QD inserts
• HUXWRX Flash Hider-QD 556
• SSA-E X trigger and Reliability Enhanced Bolt Carrier Group
• Super 42 spring with H3 buffer

Magazine, optic and scope mount are sold separately.

Product Specifications

• Manufacturer: Geissele Automatics
• Model: Super Duty MOD1
• Manufacturer SKU: 08-561B
• UPC: 810081134514
• Chambering: 5.56 NATO
• Barrel: 11.5 inches; cold hammer forged; chrome lined; Geissele tapered profile
• Twist: 1:7
• Gas system: Carbine length; Super Compact Gas Block
• Gas port diameter: 0.067 inch
• Bolt carrier group: Reliability Enhanced Bolt Carrier Group
• Bolt: Forged Stressproof Bolt; Carpenter 158+
• Upper receiver: Super Duty M4
• Lower receiver: Super Duty mil-spec
• Handguard: 10.5-inch MK16 with Geissele center tab
• Trigger: SSA-E X two-stage with Lightning Bow
• Lower parts kit: Ultra Duty
• Charging handle: Airborne Charging Handle
• Muzzle device: HUXWRX Flash Hider-QD 556
• Muzzle threads: 1/2x28
• Buffer system: Super 42 spring and H3 buffer
• Buffer tube: Six-position mil-spec 7075-T6 with Geissele QD endplate
• Brace: SB Tactical SBA3
• Grip: Geissele A17
• Finish color: Black
• Length, collapsed / extended: 27.75 / 30.375 inches
• Weight: Approximately 6 pounds

Frequently Asked Questions

Order the Geissele Super Duty MOD1 11.5-inch pistol from BattleHawk Armory. Its specialized barrel, inspected bolt, SSA-E X trigger and complete brace-equipped configuration provide a thoroughly specified foundation for your next range pistol.