SilencerCo SCO15 | Billet AR-15 Stripped Lower Receiver

The SilencerCo SCO15 stripped lower receiver is a billet 7075-T6 aluminum foundation for custom AR-15 builds. It is precision machined and designed to accept standard mil-spec lower parts kits and buffer assemblies. The design emphasizes ergonomic features and ambidextrous controls for versatile, user-focused builds. Typical applications include sport/competition receiver builds and range-oriented custom AR projects.

Product Specifications

• The manufacturer is SilencerCo.
• The model is SCO15.
• The UPC is 816413027363.
• The receiver is machined from 7075-T6 billet aluminum.
• The listed color is Black.
• The product type is a Stripped Lower Receiver.
• The ATF type is listed as receiver.
• The ATF model is SCO15.
• The ATF manufacturer is Silencer Co.
• The receiver includes a proprietary ambidextrous bolt catch/release (included).
• The receiver features an integrated enlarged trigger guard.
• The receiver includes ambidextrous multi-position QD sling swivel ports at the rear.
• The receiver has a flared magazine well for easier reloads.
• It is designed for use with a standard mil-spec lower parts kit and buffer assembly.
• The receiver includes a 45 to 90 degree fire selector window for short-throw selectors and a rear tensioner bolt hole (bolt not included).
• The listed weight is 0.9.
• The finish information is conflicting in source data — see notes.

This SCO15 lower provides a high-quality billet foundation for a wide range of AR-15 projects. Its machining and feature set are aimed at builders who want durable materials, ambidextrous controls, and an easier-to-use magazine well and trigger area. Whether assembling a competition-oriented rifle or a precision range build, this lower receiver offers the platform-level features to support a refined final firearm.