Geissele Super Duty MOD1, 5.56 NATO, 12.5", SBA3 Brace, Black, Pistol The Geissele Super Duty MOD1 in Black is a semi-automatic 5.56 NATO pistol with a 12.5-inch cold hammer forged, chrome-lined barrel and a Geissele two-stage trigger. Its factory lower receiver carries the Geissele control package. A SB Tactical SBA3 brace supplies the rear support interface. This exact variant pairs the 11.5" MK16 w/ Geissele Center Tab with SSA-E X w/ Lightning Bow and a factory HUXWRX Flash Hider- QD 556. The Black finish identifies the selected version. No magazine is included, and optics and their mounts are selected separately. Keeping these package details explicit lets you compare the complete configuration without assuming pictured accessories are supplied. Shop the Geissele Super Duty MOD1 12.5-inch Black pistol at BattleHawk Armory. 12.5-Inch Cold Hammer Forged Barrel The barrel specification is 12.5" Barrel, Cold Hammer Forged, Chrome Lined, Geissele Tapered Profile, 1-7 Twist. Cold hammer forging forms the rifled bore through a controlled manufacturing process, while chrome lining provides a protective bore surface. The tapered profile balances the barrel's structure and handling. The exact 12.5-inch length and 5.56 NATO chambering identify this configuration. Its 1/2x28 muzzle threads carry the factory muzzle device, providing a defined starting point for compatible accessories. Balanced Gas System and Reliability Enhanced Bolt Group The Carbine Length gas arrangement and Super Compact Gas Block work with the factory Super 42 w/ H3 Buffer. These components are selected together for the barrel length. The Reliability Enhanced bolt carrier group includes a Forged Carpenter 158+ Stressproof bolt. High-pressure testing and magnetic particle inspection of the barrel and bolt support the factory quality-control process. Nanoweapon-coated bolt-group surfaces resist wear and help reduce fouling adhesion during maintenance. Trigger and Receiver Controls The Airborne Charging Handle, Maritime Bolt Catch and Super Configurable Safety Selector provide the primary operating interfaces. This model retains its mil-spec lower layout, so it should not be confused with a fully ambidextrous billet-lower variant. The SSA-E X w/ Lightning Bow supplies staged take-up followed by a defined break. The Lightning Bow trigger shape offers a broad contact surface, and the Geissele A17 grip establishes a consistent firing-hand interface. Factory Support Interface and MK16 Handguard The SB Tactical SBA3 brace establishes the factory pistol configuration. The brace works with the six-position mil-spec receiver extension, while the A17 grip and MK16 handguard provide the other main contact points. The MK16 rail uses its center-tab interface to mate to the upper. Choose compatible accessories for the actual rail and keep the muzzle area clear of unsupported attachments. Product Specifications Manufacturer: Geissele Automatics Model: Super Duty MOD1 Manufacturer part number: 08-551B UPC: 810081134026 Type: Pistol Action: Semi-automatic Chambering: 5.56 NATO Color: Black Barrel: 12.5" Barrel, Cold Hammer Forged, Chrome Lined, Geissele Tapered Profile, 1-7 Twist Handguard: 11.5" MK16 w/ Geissele Center Tab Trigger: SSA-E X w/ Lightning Bow Lower receiver: Super Duty Lower Mil-Spec Upper receiver: Super Duty M4 Upper Gas-system length: Carbine Length Gas block: Super Compact Gas Block Muzzle device: HUXWRX Flash Hider- QD 556 Muzzle threads: 1/2 x 28 Buffer assembly: Super 42 w/ H3 Buffer Brace: SB Tactical SBA3 Grip: Geissele A17 Approximate firearm weight: Approx. 6.1 lbs Collapsed overall length: 28 3/4" Extended overall length: 31 3/8" Magazine supplied: None Package Contents Geissele Super Duty MOD1, 5.56 NATO, 12.5", SBA3 Brace, Black, Pistol Factory-installed components listed above No magazine included Optic and optic mount not included Frequently Asked Questions What is the exact chambering and barrel length? This Geissele Super Duty MOD1 is chambered in 5.56 NATO and has a 12.5-inch barrel. Is a magazine included? No. Choose a compatible magazine separately; no magazine capacity is included in this package. Which brace comes with this pistol? The factory configuration includes an SB Tactical SBA3 pistol brace. Order the Geissele Super Duty MOD1 12.5-inch Black from BattleHawk Armory. Choose this exact factory configuration and complete your setup with compatible accessories.