San Tan Tactical's STT15 5.56x45mm AR-15 Rifle is a precision-engineered firearm built for reliability, accuracy and durability. Designed with true matched, hand-finished pillar billet sets, the STT15 lower features a fully ambidextrous design with three QD attachment points for enhanced versatility. The upper is machined from a single solid block of 7075-T6 Certified Aerospace Aluminum, ensuring superior strength and performance. Every critical surface, including the bore, receiver extension face, barrel nut threads and barrel extension areas, is machined in a single operation to guarantee perfect alignment with the barrel assembly. Each serial-number-matched receiver set is meticulously hand-ground for an exceptional fit, refined finish and long-term accuracy. The rifle is completed with a San Tan 5.56x45mm barrel, crafted from 41V50 vanadium steel with a 1:7 twist, a 1/2-28 threaded muzzle and a dimpled surface for precise gas block alignment and retention. Designed for shooters who demand top-tier performance, the STT15 delivers unmatched precision and reliability in every shot.
STT suppressor optimized enhanced bolt carrier group improves suppressor efficiency and longevity
STT 5.56x45mm barrel for superior performance and accuracy
Equipped with a CMC Triggers Flat 3.5lb single-stage drop-in trigger for crisp, consistent performance
Magpul MOE grip and stock deliver ergonomic handling and stability for improved shooting performance
M-LOK handguard ensures a secure and customizable attachment system for tactical enhancements
Equipped with an ambidextrous charging handle for seamless operation from either side
Mil-Spec 6-position buffer tube with H1 buffer provides recoil control and adjustability
Precision CNC machined from Billet 7075-T6 certified aluminum for superior strength and durability
Features extended feed ramps for reliable and consistent feeding
Includes ambidextrous magazine and bolt release controls for improved functionality and ease of use
Finished with a black multicam CeraKote coating for a rugged and tactical appearance
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