Lower Receivers

Complete AR-15 lower receiver with patented built-in folding mechanism for compact storage. Features 7075-T6 billet construction, B5 Bravo stock, Advanced Combat Trigger, and saves .5+ lbs compared to adapter-based folding systems.

Built-in folding AR-15 lower receiver with SBA3 brace. Precision machined 7075-T6 aluminum, saves 0.5+ lbs vs adapters. Made in USA with lifetime warranty.

Patented SA-15 Stripped Folding Lower Receiver. No adapter required - revolutionary folding mechanism built into the receiver. 7075-T6 billet aluminum construction. Build your custom folding AR-15 rifle or pistol. Made in USA with lifetime warranty.

Complete billet AR-15 lower receiver machined from 7075-T6 aluminum, featuring B5 Bravo stock, ALG Advanced Combat Trigger, and Radian safety selector—the perfect foundation for your precision build.

The start of your perfect non-folding build. If you don't know your local FFL, we will help you find one after checkout.

The SA-9 Gen2 is Shield Arms' patented folding lower receiver machined from 7075-T6 billet aluminum, designed to accept Glock double-stack 9mm magazines with integrated last-round bolt hold open and enhanced parts compatibility.