Geissele Freedom Maritime Reconnaissance 6mm ARC 18" - AR-15 Rifle

The Geissele Freedom Maritime Reconnaissance 6mm ARC 18" redefines what an AR-15 can do at distance. With 6mm ARC in the chamber, it delivers meaningfully better ballistics beyond 300 yards than any 5.56 platform can match.

Chambered in 6mm ARC and running a rifle-length direct impingement system, the Geissele Freedom Maritime Reconnaissance 6mm ARC 18" is a semi-automatic AR-15 rifle engineered for consistent performance across a wide range of applications.

Extended Effective Range: The 6mm ARC cartridge maintains significantly better ballistic performance past 300 yards than 5.56 NATO — this is the platform for shooters who need genuine reach from an AR-15.

AR-15 Lower Compatibility: Standard AR-15 lower receivers work without modification. Caliber-specific BCG and magazines are the only requirements, preserving your existing lower investment.

Hunting Viability: Improved terminal energy makes 6mm ARC suitable for deer and medium game at distances where 5.56 runs out of steam — a meaningful expansion of what this AR-15 platform can do.

Precision Potential: The 18" barrel maximizes 6mm ARC velocity and accuracy at the ranges where its performance advantage over 5.56 is most pronounced.

• Caliber: 6mm ARC
• Barrel Length: 18"
• Barrel Twist: 1:7"
• Gas System: Rifle-Length Direct Impingement
• Handguard: 16" M-Lok Free-Float
• Muzzle Threading: 5/8x24
• Magazine Capacity: 30-Round
• Finish: Type III Hardcoat Anodized
• Origin: Made in the USA

Uses a standard AR-15 lower receiver with caliber-specific BCG and 6mm ARC magazines. Compatible with mil-spec buffer systems and standard lower parts kits throughout.

Built from 7075 aluminum with a Type III Hardcoat Anodized finish, this AR-15 rifle holds up to sustained use without sacrificing dimensional accuracy or function.

Purpose-made for long-range precision work, medium game hunting, and competition shooting. A platform upgrade for shooters who've outgrown what 5.56 can do at distance.

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.