Elmo's Firearms

Brownsville, PA

GEISSELE AUTOMATICS - SD-556 - 556NATO

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Seller Rating: Not Rated
Listing ID: F67E85A6

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Condition
New
Listed On
Sep 18, 2026
Item Type
Rifles
Caliber/Gauge
5.56×45mm NATO
Manufacturer
Geissele
Location
Brownsville, PA
Seller Ships
No
Member Since
Jul 2026

The Super Duty MOD1 5.56 NATO 16 takes the trusted Geissele Super Duty design and makes it even tougher. The heart of the rifle is a cold-hammer-forged barrel made from high-grade steel. It has a chrome-lined bore and a phosphate coat to handle heat, rain, and rough use. Up front, you get the HUXWRX Flash Hider-QD 556, so adding a suppressor is quick.

The Super Duty MOD1 Rifle stands out because of its Reliability Enhanced Bolt Carrier Group. Geissele coats it with a Nanoweapon finish that resists carbon and rust. The gas key is staked and torqued correctly, with chrome on the inside for smooth cycling. The Stressproof Bolt is cut from Carpenter 158+ barstock, which is known for its strength and fewer flaws. Extended upper rails help guide rounds for better feeding and fewer hang-ups.

The trigger on the Super Duty MOD1 is the SSA-E X Lightning Bow. It has a clean, two-stage pull that helps when you want to break shots with more control. The lower is cut from 7075-T6 aluminum and comes with the Ultra Duty parts kit, an ambidextrous safety, and a sturdy trigger guard. The MK16 Super Modular rail locks up tight to the upper and gives a long, clean surface for scopes, iron sights, red dots, or clip-on night optics. The rifle wraps up with a B5 Enhanced Sopmod stock and an Airborne Charging Handle for a solid, repeatable grip.

All of these upgrades put the Geissele rifles line in a strong spot for shooters who want gear that holds up over time. The Geissele rifle stays steady under heat, feeds well, and gives a familiar feel to those who care about shot timing and handling.

Features:
Cold hammer forged chrome-lined barrel
HUXWRX Flash Hider-QD 556 muzzle device
Reliability Enhanced Bolt Carrier Group
Stressproof Bolt made from Carpenter 158+ barstock
SSA-E X Lightning Bow two-stage trigger
Ultra Duty Lower Parts Kit with ambi safety
MK16 Super Modula
B5 Enhanced Sopmod stock
Airborne Charging Handle

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