The San Tan Tactical STT-15L LT lightweight receiver set (brand part no. STT-15L-LT-PILLAR-CMB) pairs a matched upper and lower built to San Tan Tactical’s lightweight LT specification, giving builders a lighter foundation than a standard mil-spec forged receiver set. San Tan Tactical machines the STT-15L from American-made materials on high-precision equipment, holding to the company’s stated commitment to domestic manufacturing quality. This set is a fit for shooters building a lightweight AR-15 for hunting, backpacking, or long carries, where every ounce off the receivers adds up. Among the receiver sets in the AR15 lowers category, the STT-15L LT stands out for its dedicated lightweight design.

Key Specifications

• This is a matched upper and lower receiver set built to the LT (lightweight) specification.
• The set is American made from domestically sourced materials.
• It is multi-caliber compatible with standard AR-15 upper and bolt combinations.
• The set is built for semi-automatic AR-15 platforms.
• Both halves are machined from 7075-T651 billet aluminum for tight tolerances.
• Finished in a matte black hard-coat anodized coating.
• The complete set weighs approximately 14.6 ounces (0.91 lb), keeping the core of a build light.
• Includes ambidextrous controls as part of the matched set.

Frequently Asked Questions

Does this set include both the upper and lower? Yes, it’s a matched upper and lower receiver set.

What does the LT designation mean? It refers to San Tan Tactical’s lightweight receiver specification.

Is this receiver set made in the USA? Yes, San Tan Tactical builds it from American-made materials.

Buy the San Tan Tactical STT-15L LT Lightweight Receiver Set

A dedicated lightweight spec and domestic manufacturing make this receiver set a strong pick for a weight-conscious build. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.