San Tan Tactical AR-15 / AR-10 Lower Parts Kit (No Trigger / FCG) - STT-LPK - UPC 680599034176
Product Description
The San Tan Tactical AR-15 / AR-10 Lower Parts Kit (STT-LPK) is a premium, builder-focused internal hardware assembly engineered for shooters installing a high-performance aftermarket trigger. By omitting the factory Fire Control Group (FCG), this kit eliminates redundant component costs while delivering San Tan Tactical’s precision-machined quality across every pin, spring, detent, and control piece.
Every component in the STT-LPK is manufactured to strict military-specification tolerances from high-strength, heat-treated steel and finished in severe-duty protective coatings for maximum wear and corrosion defense. The kit includes a standard safety selector, bolt catch assembly, magazine catch assembly, pivot/takedown pins, buffer retainer assembly, and all required detents and springs.
Ideal for custom AR-15, AR-10, and SR-25 platform builds featuring drop-in or precision match triggers, the San Tan Tactical STT-LPK ensures smooth mechanical cycling, proper detent spring tension, and uncompromised staging utility for duty, competition, and tactical setups.
*Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Direct fit for standard Mil-Spec forged or billet AR-15 lower receivers. Small parts, detents, springs, bolt catch, and mag release hardware are also cross-compatible with standard AR-10 / SR-25 receivers. Note: Does NOT include a Fire Control Group (trigger, hammer, disconnector, or FCG pins) or pistol grip. Pivot/takedown pins included fit standard AR-15 receivers.
- Verify stripped lower receiver is clean and free of burrs or excess finish inside pin holes.
- Install magazine catch assembly, bolt catch, pivot/takedown pins, and buffer retainer pin with supplied springs and detents.
- Install your choice of aftermarket 0.154" fire control group and pistol grip before final staging and safety function testing.
Key Features
- No Fire Control Group (No FCG): Build-ready package for operators pairing their lower with premium aftermarket single-stage or two-stage triggers.
- High-Strength Steel Construction: Precision-machined, heat-treated steel components with corrosion-resistant finishes.
- Complete Small Parts Assembly: Includes safety selector, bolt catch, magazine catch, takedown/pivot pins, buffer retainer, springs, and detents.
- Multi-Platform Compatibility: Core lower internals work seamlessly with standard AR-15 and large-frame AR-10 / SR-25 lower receivers.
- San Tan Tactical Quality Control: Strict dimensional tolerances ensure smooth detent movement and positive lockup.
Product Specifications
- Brand: San Tan Tactical
- Model: AR-15 / AR-10 Lower Parts Kit (Without Trigger)
- MPN / Part Number: STT-LPK
- UPC: 680599034176
- Platform Compatibility: AR-15 / AR-10 / SR-25 Standard Lower Receivers
- Fire Control Group: NOT Included (No Trigger / Hammer)
- Pistol Grip: NOT Included
- Finish / Color: Black Oxide / Matte Black
- Mass: ~4.8 oz (136.1 g)
