San Tan Tactical STT-15 Pillar Billet Receiver Set

Manufactured by San Tan Tactical
Manufactured by San Tan Tactical
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NOTE: Limit 1 per household. Quantities exceeding 1 will not allow checkout.

Items that are regulated by the ATF have restrictions and requirements:
•Your entire order will ship only to a Federal Firearm License holder.
•Current processing time is approximately 14 to 16 days.
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to
•If this firearm includes magazines with a capacity higher than 10 rounds it may not be legal in your state. We will review all order prior to shipping and if your state does not allow the included magazines they will be removed.



The San Tan Tactical STT-15 Pillar Billet Receiver Set was designed from the ground up to be truly ambidextrous without making any compromises. Machined out of a solid block of 7075-T6 aluminum on state-of-the-art CNC machinery. This allows for a greater degree of precision for extremely tight tolerances and additional features like lightening cuts to reduce weight and an enlarged magazine well and trigger guard. Whether you are right or left handed or the situation requires you to shoot with your off-hand, a rifle built on this receiver set won’t hold you back. Machined right into the lower receiver are bolt and magazine release buttons on each side giving you better control over your rifle without needing to add aftermarket parts. The STT-15 billet AR-15 receiver set from San Tan Tactical offers uncompromising performance, so you can build the rifle you need.

  • Machined from 7075-T6 aluminum
  • Mil-Spec Type III hardcoat anodized black
  • Fully ambidextrous design
  • Both mag and bolt releases come installed
  • Compatible with Mil-Spec parts kits
  • .154” trigger pin holes
  • Lightened receiver cuts
  • Enlarged trigger guard and beveled magazine well
  • Receiver tension screw
  • Upper receiver comes assembled
  • QD sling swivel slots

The lower receiver comes with both magazine and bolt releases assembled but a lower parts kit is required to finish it. Compatible with all Mil-Spec components like a trigger with .154” pin diameters and ambidextrous safety selectors. However, the upper receiver comes fully assembled with a dust cover and forward assist. Just thrown in your favorite ambidextrous charging handle and you have a rifle that doesn’t discriminate against lefties. Additional features of this AR-15 billet receiver set is built in quick detach sling swivel slots on both sides and a receiver tension screw that can be accessed through the bottom near the pistol grip.

San Tan Tactical believes in carrying on the tradition of American designed and made firearms and that is exactly what they are doing. Their receivers and lower parts are some of the most innovative in the industry and they are proud bring you a product not only made from American sourced materials, but American machinery as well. They take the time to listen to customers critiques and are constantly evolving their products to satisfy your needs.
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BrandSan Tan Tactical
Caliber MarkingMulti-Caliber
FinishHardcoat Anodized
Trigger Pin DiameterMIL-SPEC .154
Weight1.25 lbs
Forward AssistAssembled with Forward Assist
Port DoorAssembled with Port Cover

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, see

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