Geissele Automatics 08-518S Super Duty MOD1 300 Blackout 8″ Black Threaded Barrel, Flat Dark Earth Receiver w/Picatinny Rail, Flat Dark Earth Synthetic SB Tactical SBA3 Brace, FDE A17 Grip

Overview

The Geissele Super Duty MOD1 is an AR-15 handgun chambered in .300 AAC Blackout, featuring an 8-inch cold hammer-forged, chrome-lined barrel. Designed for versatility and reliability, the platform utilizes a Phased Array gas system with a custom pistol-length gas port and a Super 42 braided buffer spring to ensure smooth cycling with both subsonic and supersonic loads. The barrel is threaded 5/8x24 and equipped with a Nanocoated HUXWRX Flash Hider-QD muzzle device. This model features the Geissele SMR MK16 M-LOK handguard with a center tab and an SSA-E X two-stage trigger with a wide-body Lightning Bow. Purpose-driven controls include an ambidextrous super configurable safety, an Airborne charging handle, a checkered magazine release, and a Maritime bolt catch. Built on a Mil-Spec lower receiver, the handgun is equipped with an SB Tactical SBA3 brace, a Geissele A17 grip, and a Geissele QD sling mount endplate. The system uses a Nanoweapon-coated Reliability Enhanced Bolt Carrier Group and a stressproof bolt, both of which are high-pressure tested and magnetic particle inspected for maximum durability.

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