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The San Tan Tactical STT-15 is a matched upper and lower receiver combo built from the ground up for shooters who refuse to compromise on ambidextrous functionality. Whether you're left-handed, right-handed, or need to fight with either hand, this receiver set puts all the controls exactly where you need them without adding hundreds in accessories.
Machined from a single block of aerospace-grade 7075-T6 aluminum and finished in Mil-Spec Type III hard anodized olive drab, the STT-15 delivers precision tolerances and a premium feel that reflects the time and craftsmanship invested in its design. The matched set ensures optimal fitment between upper and lower with zero tolerance stacking issues you might encounter mixing separate parts.
The lower receiver comes with bolt and magazine release buttons machined directly into both sides of the frame, giving you full control regardless of which hand you operate from. An oversized trigger guard accommodates gloved hands, while integrated quick detach sling points on both sides and a receiver tension screw add tactical flexibility without requiring additional work. The ambidextrous controls come pre-assembled and ready to function out of the box.
The upper arrives fully assembled with dust cover and forward assist installed, so you only need to add your charging handle and bolt carrier group to complete the build. The lower comes with mag and bolt releases assembled, though you'll still need a standard Mil-Spec lower parts kit to finish the receiver. The combo is compatible with all standard AR-15 M16 components and STANAG-pattern magazines, making parts sourcing straightforward.
The billet aluminum construction creates a rigid foundation with superior strength and a clean, professional appearance. San Tan Tactical's commitment to American manufacturing shows in every detail, from the precision CNC work to the durable hard-coat anodize that resists corrosion and wear. The olive drab color provides a modern tactical aesthetic while maintaining visibility.
Yes. The lower receiver comes with the magazine and bolt releases already assembled, but you'll need a standard Mil-Spec lower parts kit to install the trigger, hammer, springs, and other internal components. The upper is ready to go once you add a charging handle and bolt carrier group.
Absolutely. This receiver combo features bolt and magazine release buttons machined on both the left and right sides of the lower, so left-handed shooters can operate every control without needing to fumble for aftermarket safety selectors or reach across the receiver. It's designed from the ground up for ambidextrous function.
The STT-15 combo already includes a matched upper receiver that's fully assembled and ready to accept a charging handle and bolt carrier group. If you want to use a different upper, make sure it's Mil-Spec AR-15 compatible and ideally from the same manufacturer for the best fitment.
Yes. The lower is compatible with all STANAG-pattern M16 and AR-15 magazines. The enlarged 1.38-inch magazine well flare even makes reloads faster and smoother during shooting.
Yes. This is a matched receiver set, which means the upper and lower are paired together at the factory and hand-ground for optimal fit. This eliminates tolerance stacking issues and ensures tight, consistent fitment between the two parts.
San Tan Tactical backs the STT-15 with a lifetime warranty, so you're covered for the life of your rifle. It's a reflection of their confidence in the quality and durability of the billet aluminum construction and precision machining.
| UPC | 687051693483 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | STT15-COMBO-ANO-OD |
| Action | |
| Caliber/Gauge | Multi |
| Color | Olive Drab Green |
| Model | |
| Product Type | Lower/Upper Set |
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