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San Tan Tactical STT-15
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

San Tan Tactical

STT-15

$210.00
$206.50
Sale Price
Low Stock (5 left) California compliant

San Tan Tactical STT-15, Upper, 223 Remington/5.56 NATO, Black STT-PILLAR-1

Key Details
Brand San Tan Tactical
Manufacturer Part Number STT-PILLAR-1
UPC 680599034060
SKU STTPILLAR1
Current Stock 5 available
Quantity Updated Apr 26, 2026 3:05 PM
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Purchase Requirements
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

The STT PILLAR upper receiver is the lightest billet upper available today! STT wanted to create something better, something different. Being better was not enough -- STT needed to design an upper that overcame the shortcomings seen in the current offerings . It needed to be lighter, stronger, and different, and all while looking good doing it. SST wasn't going to settle for just hacking another receiver out of a block and calling it good. The first thing people will notice is the truss pockets. With the shooting styles of today's shooters everyone wants to run 15" & 16" long rails and grip the rail as far out as possible to gain the most control of the rifle. That's like attaching a 16" lever to the rifle. The truss design acts similar to a bridge that carries and distributes the stress across the entire platform verses putting all of the stress on the material right behind the threads of the receiver. The extra strength gained from this design is not only to help the receiver. It also in turn helps improve your accuracy. When most people think of a billet receiver they think of a blocky, heavy, thick design that is CNC machined. STT wanted to break that mold too.

Features
  • Billet Of 7075 -T651 Aerospace Grade Aluminum
  • M4 Feed Ramps
  • Mil Spec Type III Class II Hard Coat Anodized Black
Specifications
UPC: 680599034060
Manufacturer: San Tan Tactical
Manufacturer Part #: STT-PILLAR-1
Model: STT-15
Sights: Flat Top
Type: Upper