*This item is cosmetically blemished. We have inspected these and cannot tell what the blemishes are.*
San Tan Tactical’s STT15 5.56 AR15 Rifle is built with their true matched, hand finished pillar billet sets. The STT15 lower is fully ambidextrous and has three QD attachment points.
The upper is cut from a single solid 7075T6 Certified Aerospace Aluminum. The bore, receiver extension face, barrel nut threads and barrel extension surfaces are all machined in one operation ensuring that they are perfectly concentric and perpendicular to the barrel assembly. Our receiver serial number matched sets are hand ground for optimal fit, finish and long-term repeatable accuracy.
Adding to that the San Tan 5.56 barrel, machined from 41V50 vanadium steel with a 1:7 twist, treaded ½-28 and dimpled for gas block alignment and retention.
Built with the CMC AR15 3.5lb Single Stage Flat Bow Trigger. CMC Triggers is the original manufacturer of the Drop-in Trigger Group for the AR-15/10 platform since 2003. CMC’s critical sear engagement surfaces have a proprietary machining process that renders superior surface finish and dimensional control. As compared to their competition, the techniques used to establish a 1-2 RMS surface finish as opposed to EDMing which leaves a pitty 32 RMS, compared to a mirror which is 0 RMS.
STT Enhanced Bolt Carrier Group – AR15 5.56 BCG rounds out the internals, STT's BCG is 9310 case hardened steel, magnetic particle tested, and proof tested to 70000 psi. It features three gas ports to bleed of excess gas encountered with suppressors, the full auto tail is enlarged and chamfered to allow for faster center up in the buffer tube and prevents carrier tilt. Finished in Black Multicam Cerakote with a steaked gas key.
Midwest industries® combat rail gives the STT15 a full length picatinny rail with M-LOK attachments all around for any attachment needs and two more QD sling points.
San Tan Tactical STT15 5.56 Rifle Features:
- STT Suppressor Optimized Enhanced Bolt carrier group
- STT 5.56 Barrel
- CMC Triggers® Flat 3.5lb Single Stage Drop-In Trigger
- Magpul® MOE® Grips, and Stock
- M-LOK® Hand Guard
- Ambidextrous Charging Handle
- MIL-Spec 6 Position Buffer Tube and H1 Buffer
- Precision CNC Machined from Billet 7075-T6 Certified Aluminum
- Features Extended Feed Ramps
- Ambidextrous Mag and Bolt Release Controls
- Black Multicam Cerakote Finish*
The folks at San Tan Tactical want to leave a proud legacy of American Made firearm design. By innovation, superior performance, and value. American Made, through and through is the core value at San Tan Tactical. San Tan Tactical wants every shooter to be completely satisfied! Giving them absolute pride of ownership in each product we design and manufacture.
All STT products come with a Lifetime Warranty and are made in the U.S.A., STT proudly designs all its products for Law Enforcement, Military and Civilian use.
*Cerakote is a ceramic based wear resistance and corrosion protection zinc, and aluminum die casting surface finish used primarily as a metal surface protectant. Cerakote surface finishes increase the hardness of a metal surface while improving impact strength and resistance to chemicals, corrosion, and wear.
