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GEISSELE AUTOMATICS SD-300

Product Information & Specs

Seller Description For This Firearm

This Geissele Automatics pistol comes with two 30-round magazines, a soft case, an SB adjustable pistol brace, a Geissele trigger, and a threaded muzzle brake.

Get the best bang for your buck when you get a Certified Used Firearm. When you see the Certified Used stamp on any of our firearms, you can be confident that you're getting exactly what you want – a gun only in very good to excellent condition and held to the highest quality standard. All Certified Used Guns come with a 'no questions asked' return policy.

General Manufacturer Product Information

The Geissele Automatics SD-300 Super Duty® MOD1 AR pistol represents a refined evolution of the Super Duty platform, engineered for enhanced ergonomics, modularity, and dependable performance. Chambered in 300BLK, it features a cold hammer forged, chrome-lined barrel crafted from Chrome Moly Vanadium steel for durability and precision.

At its core is the patented Phased Array® gas system with the Tri-Port™ design, delivering consistent, balanced operation across a wide range of ammunition—no adjustable gas system required. Paired with a braided buffer spring, it ensures smooth, reliable cycling whether suppressed or unsuppressed.

Premium components include a Nanoweapon®-coated bolt carrier group, SSA-E X® two-stage trigger, Airborne Charging Handle, and Super Modular Rail MK16. Built without compromise, it offers a cohesive blend of innovation and proven reliability.

UPC ECOM00554120
Action SEMI AUTOMATIC
Barrel Length 8.00" BARREL
Caliber .300 AAC BLACKOUT
Capacity 30 ROUNDS
Finish BLACK
Weight 5.4
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