Geissele Super Duty SD-556 AR-15 Pistol, 5.56 NATO, 12.5 in Barrel, DDC Anodized, Ambidextrous Controls
This Geissele Automatics Super Duty SD-556 AR-15 pattern pistol stands out with a 12.5 inch 5.56 NATO barrel, full DDC (Desert Dirt Color) anodized finish across the receivers, handguard, and charging handle, and comprehensive ambidextrous controls. It features Geissele's Airborne Charging Handle, a Geissele-marked bolt carrier, a free-float M-LOK handguard with a continuous T-marked top rail, and an open-tine 3-prong flash hider. Made in the USA and shipped with one 32-round magazine.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are a few scuffs on the Picatinny rail, and light carbon buildup on the muzzle device.
What’s Included
- Geissele Super Duty SD-556 AR-15 pistol
- 1x 32-round polymer AR-15 magazine with yellow follower (brand not confirmed)
The Super Duty SD-556 pairs a 12.5 inch, 1/2x28 threaded barrel with an open-tine 3-prong flash hider and a free-float aluminum M-LOK handguard. The handguard carries a continuous T-marked 1913 Picatinny top rail, with a bolt-on M-LOK QD sling mount installed for sling attachment. The aluminum receivers, rail, and charging handle wear a matching DDC anodized finish.
Controls and charging are fully ambidextrous, including the safety selector, paddle-style magazine release, and Geissele Airborne Charging Handle (PN 05-497). An enlarged Maritime-style bolt catch enhances manipulation, and the bolt carrier is Geissele-marked.
The fire control group features a flat-face trigger. Furniture includes a Geissele-branded textured polymer grip in tan and an adjustable tan brace with a Velcro strap. The pistol uses a STANAG magazine interface and has a listed capacity of 32+1.
This AR-15 pattern pistol is chambered in 5.56mm NATO and operates via a semi-automatic direct impingement system. No iron sights or optics are installed. Built in the USA, it is finished and configured for durability and confident handling.