Description
The San Tan Tactical STT-15 5.56 7.5″ 30RD MC Black is a compact AR-platform pistol built around San Tan’s own billet receiver set. Chambered for .223 Rem / 5.56 NATO, this semi-auto runs on a 7.5-inch barrel with a 30-round magazine. Finished in MultiCam Black Cerakote, it’s sized for tight spaces while keeping the ergonomics you already know.
| Manufacturer | San Tan Tactical |
|---|---|
| Model | STT-15 |
| Material | 7075 T6 aerospace-grade aluminum (receiver set) |
| Compatibility | AR-15 components and magazines |
| Finish | MultiCam Black Cerakote |
| Weight | Approx. 5.2 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- Pillar Billet Receiver Set – Machined from 7075 T6 aluminum, this receiver set is the backbone of the gun. Why it matters: it gives you a stiff, tight platform that holds zero and resists wear over thousands of rounds.
- Ambidextrous Controls – Bolt release and magazine release are mirrored for both hands. Why it matters: you don’t have to break your grip or shift hands to reload or clear a malfunction—keeps you in the fight.
- 7.5-Inch Barrel – Short enough for maneuvering in vehicles or tight corners. Why it matters: you get a compact package that still runs 5.56 reliably, with a flash can or muzzle device to tame the blast.
- MultiCam Black Cerakote – This isn’t just paint; it’s a durable ceramic finish. Why it matters: it resists scratches, corrosion, and carbon buildup, and the MC Black pattern blends with most gear setups.
- 30-Round Magazine – Standard capacity for a pistol or SBR-style build. Why it matters: you’re not stuck with a 10-rounder—this gives you the firepower for range sessions or defensive use.
Who It’s For
This pistol is for the shooter who wants a compact AR platform without giving up quality. It fits the new gun owner who wants something reliable out of the box, the experienced shooter looking for a truck gun or backpack gun, and anyone who appreciates ambi controls without having to swap parts later. If you’re building out a short-barreled setup and want a complete gun ready to go, this is a solid pick.
Pros & Cons
- Pro: Billet receiver set is stiffer than forged – better accuracy potential.
- Pro: Ambi controls are standard – no need to buy aftermarket parts.
- Pro: MultiCam Black Cerakote is tough and looks great.
- Con: 7.5-inch barrel is loud and has a big fireball – you’ll want a good muzzle device or suppressor. Per San Tan Tactical specs, this barrel length is meant for close quarters, not long-range precision.
Comparison: San Tan Tactical STT-15 vs. Zev Technologies OZ9 vs. Agency Arms G19
| Feature | San Tan Tactical STT-15 | Zev Technologies OZ9 | Agency Arms G19 |
|---|---|---|---|
| Platform | AR-15 pistol | Striker-fired pistol (Glock-based) | Striker-fired pistol (Glock-based) |
| Caliber | 5.56 NATO | 9mm | 9mm |
| Barrel Length | 7.5″ | 4.49″ | 4.02″ |
| Capacity | 30 rounds | 17 rounds | 15 rounds |
| Receiver | 7075 T6 billet aluminum | 7075 T6 billet aluminum | Polymer with metal insert |
| Finish | MultiCam Black Cerakote | Black Nitride / Cerakote options | Black Nitride / Cerakote options |
| MSRP | $1,482.05 | ~$1,600 | ~$1,400 |
The STT-15 gives you a rifle-caliber platform in a pistol package, while the OZ9 and Agency Arms are 9mm handguns. If you want the ballistics and magazine capacity of 5.56 in a compact form, the STT-15 wins. If you need something that fits a standard holster and is easier to carry concealed, the others are better choices.
Frequently Asked Questions
What is the barrel twist rate on the STT-15?
The 7.5-inch barrel has a 1:7 twist rate, which stabilizes heavier bullets (55-77 grain) well. Per San Tan Tactical specs, this twist is standard for 5.56 NATO barrels.
Can I use standard AR-15 magazines with this pistol?
Yes, the STT-15 accepts all standard AR-15/M16 magazines. It comes with a 30-round magazine, but you can use any capacity you prefer.
Is this considered a pistol or a rifle under federal law?
As configured with a 7.5-inch barrel and a pistol brace (if installed), it’s classified as a pistol. Always check local laws before purchasing.
Does the ambidextrous bolt release work for left-handed shooters?
Yes, the left-side bolt release is mirrored for right-hand placement, making it easy for lefties to operate without changing grip.
Why Buy From Us
- ✓ Nationwide delivery (all 50 states)
- ✓ Ships 1-2 business days
- ✓ 30-day returns
- ✓ Secure checkout
Last updated: April 2026
According to NSSF data, over 40% of new firearm owners in 2025 chose a pistol or AR-platform pistol for home defense. The San Tan Tactical STT-15 fits that trend with a compact, reliable package.
Browse more in our AR Pistols or San Tan Tactical sections.
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