STT-15L Lite PILLAR Billet Lower Receiver

The STT-15L has all the same great aesthetics as our standard STT-15 Receiver Combo but incorporates a significant weight reduction. We set out to design our STT-15L for those who participate in 3-gun, hunting, or any other shooting activity where weight is a concern.



The STT-15L Lower weighs 7.7 oz and accepts all Mil-Spec AR-15\M16 components and lower parts kits, excluding the included ambidextrous controls.

We machine the STT-15L directly from a billet of 7075-T6 Aerospace Grade American Aluminum on our industry-leading CNC machinery. This process allows us to hold ultra-tight tolerances and make sure that the final product is comes out precisely as designed. The receiver is finished in Mil-Spec, MIL-A-8625 Type III Class II hard anodizing.


  • Huge 1.38″ Integrally Machined Magazine Well Flare
  • San Tan Tactical Truss Pockets for Increased Structural Rigidity
  • Bullet Pictogram Safety Selector Markings
  • Set Screw Trigger Creep Adjustment
  • Set Screw Upper Take Down Tension Adjustment
  • Shooter Ready Finger Rest
  • Oversized Winter Trigger Guard Perfect for Gloved Hands
  • Dowel Screw Assembly
  • Ultra-Grip Texture on All Controls
  • Backed by STT’s Unmatched Lifetime Warranty
  • Made in the USA


Santan Tactical
Direct: 480-726-8261
Fax: 480-393-4018
Mailing Address:
2223 West Pecos Road
Suite #6
Chandler, AZ 85224