Shield Arms SA-15 Folding AR-15 Multi-Caliber Billet Aluminum Black Anodized Stripped Lower Receiver

The Shield Arms SA-15 is a stripped lower receiver for the AR-15 platform featuring a patented built-in folding mechanism - no separate adapter required - that allows a completed rifle or pistol to fold in half for compact storage and transport.

Machined from 7075-T6 billet aluminum and finished in black anodized hardcoat, the SA-15 is built to mil-spec dimensions and accepts standard AR-15 lower parts kits, buffer tubes, and pistol braces or stocks. The integrated folding adapter is built directly into the receiver, eliminating the need for an aftermarket folder.

Designed as a multi-caliber platform, the SA-15 folding lower supports 5.56 NATO / .223 Remington as well as .300 Blackout uppers, making it a flexible base for both rifle and short-barrel builds.

Weighing just 12.4 oz, the SA-15 measures 7.75" when folded for easy stowage in a range bag or backpack. As a stripped lower receiver, it ships ready for the builder to complete with their choice of fire control group, grip, buffer assembly, and stock or brace.

DISCLAIMER: Firearms and receivers are subject to state-specific shipping restrictions and must be transferred through a valid FFL dealer. Please visit our shipping restrictions page to review all applicable restrictions for your state. Subject to change.