San Tan Tactical STT-15 6ARC, Semi-automatic, 6MM ARC, 18 in Proof Research Carbon Fiber Barrel, Rifle Length Gas System, Black Finish, Magpul CTR Stock, Front/Rear Flip Sights, 30Rd, 1 Magazine STT-15-6ARC

Overview

The San Tan Tactical STT-15 is a semi-automatic modern sporting rifle chambered in 6mm ARC with a 30-round capacity. It features an 18-inch Proof Research carbon fiber barrel, a rifle-length gas system, and a suppressor-optimized enhanced bolt carrier group with an HPT/MPI-tested bolt and a Crane O-ring upgrade. The upper and lower receivers are precision CNC-machined from certified 7075-T6 billet aluminum with signature lightening pillar cuts, a deep black hardcoat anodized finish, extended feed ramps, and a proprietary burnished bore. Fire control and ergonomics are managed by a CMC 3.5-pound single-stage match trigger, a Magpul MOE Plus grip, a Magpul CTR stock, Magpul MBUS Pro front and rear flip sights, and an STT 16-inch M-LOK handguard.

Price & Stock History

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