The San Tan Tactical STT-15L LT lightweight stripped lower receiver (brand part no. STT-15L-LT-LWR) gives builders San Tan Tactical’s dedicated lightweight LT specification as a standalone lower, without the matched upper included in the company’s receiver sets. San Tan Tactical machines the STT-15L from American-made materials on high-precision equipment, standing behind the company’s commitment to domestic manufacturing. This lower ships stripped, so it’s ready for the builder’s own lower parts kit, buffer, and stock, making it a fit for anyone building a lightweight AR-15 around an upper they already own. Among the lowers in the AR15 lowers category, the STT-15L LT stands out for its dedicated lightweight design.

Key Specifications

• This lower is built to San Tan Tactical’s LT (lightweight) specification.
• It ships stripped, ready for a lower parts kit, buffer, and stock of the builder’s choice.
• The lower is American made from domestically sourced materials.
• It is multi-caliber compatible with standard AR-15 upper and bolt combinations.
• The receiver is built for semi-automatic AR-15 platforms.
• Machined from 7075-T651 billet aluminum for tight tolerances.
• Finished in a matte black hard-coat anodized coating.
• Weighs approximately 7.7 ounces on its own, notably lighter than a standard mil-spec forged lower.

Frequently Asked Questions

Does this lower ship with an upper receiver? No, this is the standalone lower only, stripped and ready to pair with your own upper.

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

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

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

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