San Tan Tactical STT-15 5.56 Rifle, 16-inch Billet

The San Tan Tactical STT-15 5.56 Rifle (San Tan Tactical part no. STT15-R-556-16) is built with true matched, hand-finished pillar billet upper and lower sets, giving it a tighter, more precise fit than a typical mil-spec AR-15. This STT15 lower is fully ambidextrous, giving left- and right-handed shooters identical control over every function, and it features three QD attachment points for flexible sling setups. Chambered in .223 Rem/5.56 NATO with a 16-inch barrel and a 30-round magazine, this rifle is built for shooters who want genuine precision-fit craftsmanship in a duty-ready AR-15.

Key Specifications

• Chambered in .223 REM/5.56 NATO, one of the most widely available rifle calibers.
• Runs a 16-inch barrel for a balanced, duty-ready AR-15 platform.
• Holds 30 rounds for a strong on-board capacity.
• Built with true matched, hand-finished pillar billet upper and lower receivers.
• Features a fully ambidextrous lower for identical control from either hand.
• Includes three QD attachment points for flexible sling setups.
• Runs a reliable semi-automatic action on the AR-15 platform.
• Machined from a single 7075-T651 aerospace-grade aluminum billet for both the upper and lower.
• Features three QD sling attachment points for flexible carry configurations.

Frequently Asked Questions

What makes the STT-15 lower different from a standard AR-15 lower? It’s built from true matched, hand-finished pillar billet stock rather than standard mil-spec forgings.

Is the lower ambidextrous? Yes, the STT15 lower is fully ambidextrous.

Buy the San Tan Tactical STT-15 5.56 Rifle

Get genuine precision-fit billet craftsmanship in a duty-ready AR-15. Order the San Tan Tactical STT-15 from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, from our AR rifles lineup.