The San Tan Tactical STT-15 (brand part no. STT15-C-556-10-ANO-OD) is a 5.56 NATO AR-platform pistol built around a 10.5-inch carbine-length barrel and finished in OD Green Cerakote. San Tan Tactical machines the upper from a single billet of 7075-T6 aerospace aluminum, cutting the bore, receiver extension face, barrel nut threads, and barrel extension surfaces in one operation for tight concentricity, and pairs it with a 41V50 vanadium steel barrel rifled at a 1:7 twist and threaded 1/2×28. The fully ambidextrous lower gives shooters controls on both sides of the gun, and the STT-enhanced bolt carrier group is proof tested to 70,000 psi with three gas ports built to bleed excess gas when running a suppressor, making this a serious short-barreled pistol build rather than a budget range toy.

Key Specifications

• Chambered in 5.56 NATO with a 10.5-inch, threaded 1/2×28 barrel.
• Barrel steel is 41V50 vanadium steel, rifled at a 1:7 twist rate.
• Upper receiver is machined from a single billet of 7075-T6 aerospace aluminum.
• Lower receiver is fully ambidextrous with three QD sling attachment points.
• Action is semi-automatic.
• Bolt carrier group is 9310 case-hardened steel, proof tested to 70,000 psi with three gas ports for suppressor use.
• Ships with a 30-round magazine for 30+1 capacity.
• Fitted with a full-length Picatinny rail handguard.
• Finished in OD Green Cerakote.

Frequently Asked Questions

Is this configuration a pistol or a rifle? It is built and sold as an AR-platform pistol, with a 10.5-inch barrel and no shoulder stock, not as a short-barreled rifle.

Is this suppressor friendly? Yes, the bolt carrier group includes three gas ports designed to bleed excess gas when running a suppressor, and the barrel is threaded for one.

What magazine capacity does it ship with? A 30-round magazine for 30+1 total capacity.

Buy the San Tan Tactical STT-15 5.56 NATO Pistol

Get a billet-machined, suppressor-ready AR pistol built to run hard. Browse our AR-platform selection and order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.