Geissele Automatics Super Duty Pinned 5.56 NATO 13.9" - AR-15 Rifle

The Geissele Automatics Super Duty Pinned 5.56 NATO 13.9" is built for people who can't afford a malfunction. Engineered in 5.56 NATO to the same standards demanded by military and law enforcement users who stake their lives on their equipment.

Built as a semi-automatic AR-15 rifle around 5.56 NATO and a mid-length direct impingement system, the Geissele Automatics Super Duty Pinned 5.56 NATO 13.9" delivers a proven AR-15 experience from first round to last.

Built Beyond Mil-Spec: Mil-spec is the minimum acceptable standard; this 5.56 NATO AR-15 rifle exceeds it throughout. Components are selected for the tightest tolerances and best available materials, not the lowest cost.

Consistent Performance Under Pressure: Reliability when conditions are bad, ammunition is dirty, and the rifle is hot is what separates professional-grade platforms from recreational ones. This rifle delivers that consistency.

Match-Accurate Architecture: Cold hammer forged or precision button-rifled barrels, hand-fitted components, and proper headspace ensure accuracy that outlasts most optics mounted on it.

Professional Pedigree: The same manufacturing standards that supply military and law enforcement contracts go into every 5.56 NATO rifle that comes off this line — civilian availability, professional build quality.

• Caliber: 5.56 NATO
• Barrel Length: 13.9"
• Gas System: Mid-Length Direct Impingement
• Handguard: Free-Float
• Muzzle Threading: 1/2x28
• Magazine Capacity: 30-Round
• Finish: Type III Hardcoat Anodized
• Origin: Made in the USA

Accepts all STANAG-pattern 5.56 NATO magazines and pairs with any mil-spec AR-15 lower receiver. Compatible with standard carbine buffer systems and mil-spec lower parts kits.

Type III Hardcoat Anodized over 7075 aluminum construction gives this AR-15 rifle solid corrosion resistance and a durable surface that holds up across a wide range of storage and operating conditions.

Built for professional duty use, serious home defense, and competition. Trusted by law enforcement, military personnel, and competitive shooters who won't settle for anything less.

Geissele Automatics is synonymous with precision — their Super Duty and Freedom Rifle platforms are actively used by U.S. Special Operations units and trusted by professional users worldwide. Made in the USA.