San Tan Tactical's STT15 5.56x45mm AR-15 Rifle is the epitome of precision and craftsmanship, designed for shooters who demand both performance and durability. Featuring true matched, hand-finished pillar billet sets, this rifle delivers exceptional strength and flawless fit. The STT15 lower receiver is fully ambidextrous, providing ease of use for both left and right-handed shooters and includes three QD attachment points for seamless accessory integration. The upper receiver is machined from a solid block of 7075T6 Certified Aerospace Aluminum, ensuring superior strength and a lightweight profile. The critical components, including the bore, receiver extension face, barrel nut threads and barrel extension surfaces, are all precisely machined in a single operation to guarantee perfect concentricity and alignment with the barrel assembly. Our receiver sets are serial number matched and hand-ground for an optimal fit, smooth finish and consistent, long-term accuracy. The San Tan 5.56x45mm barrel is machined from durable 41V50 vanadium steel with a 1:7 twist, threaded 1/2-28 and dimpled for precise gas block alignment and secure retention. Every aspect of the STT15 rifle is crafted to deliver superior reliability and exceptional performance, making it a top choice for any serious enthusiast or professional.

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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It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Magazines will be removed from firearms when shipping to states with magazine capacity restrictions.

California 10+ Round Magazine Buyers: PSA values your freedom and constitutional rights above all else. However, PSA will not accept new orders nor will ship any order until the Ninth Circuit Federal Court of Appeals mandate becomes finalized. Once this mandate is finalized, we will start accepting new orders and ship 10+ round magazines to California Customers.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).