The AR-15 pistol platform continues to evolve for users who demand compact, accurate, and reliable defensive tools. The San Tan Tactical STT-15 delivers a precision-focused package built to tight tolerances and designed for repeatable performance in compact form.

SAN-TAN TACTICAL STT-15

Overview

The SAN-TAN TACTICAL STT-15 is a 5.56x45mm AR-15 pistol engineered around precision. Priced at $1721.99, the STT-15 emphasizes concentricity and fit through machining strategies normally reserved for higher-end rifles. If you want a compact defensive pistol that doesn’t sacrifice accuracy or build quality, Shop this product.

Build and Materials

Matched Billet Receivers

San-Tan Tactical uses true matched, hand-finished pillar billet sets. Receivers are serial number-matched and hand-ground for an optimal fit and finish that supports long-term repeatable precision. The upper is a one-piece solid 7075T6 Certified Aerospace Aluminum forging, giving strength without unnecessary flex.

Barrel and Machining

Key to the STT-15’s accuracy is the manufacturing approach: the bore, receiver extension face, barrel nut threads and barrel extension surfaces are machined in a single operation to ensure perfect concentricity and perpendicularity to the barrel assembly. The San Tan 5.56x45mm barrel is 41V50 vanadium steel, 1:7 twist, threaded 1/2-28 and dimpled for gas block alignment—features that support consistent bullet stabilization and reliable gas system retention.

Controls and Versatility

The fully ambidextrous STT15 lower includes three QD attachment points for slings or mounting accessories. That ambidexterity combined with a compact AR-15 pistol footprint makes the STT-15 suitable for home defense, vehicle use, or any role where maneuverability matters. For full specs and to confirm options, View product details and pricing.

Caliber and Practical Use

Chambered in 5.56x45mm, the STT-15 benefits from widely available ammunition, flat trajectory, and good barrier performance for defensive scenarios. The 1:7 twist stabilizes heavier projectile weights if you choose supersonic or specialty defensive loads, while the threaded muzzle allows for muzzle devices or suppressor mounting where legal.

Why it matters

For shooters who prioritize machining precision, matched receivers, and a robust 7075T6 upper, the SAN-TAN TACTICAL STT-15 represents a purpose-built AR-15 pistol option. Its combination of materials, single-operation machining, and ambidextrous features make it a standout in the semi auto category. Check current availability and purchase options online at the shop page linked here: Check current availability.

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