SHIELD SA-15 STRIPPED LOWER FLD BLK

Description

The Shield Arms SA-15 stripped lower is built for builders who want a folding AR-15 without grafting an external folding adapter onto a standard receiver. The folding mechanism is machined directly into the billet aluminum body, which eliminates the separate adapter unit and the added length, weight, and potential slop that comes with it. The result is a more compact folded package than a standard receiver paired with an aftermarket hinge block.

Machined from 7075-T6 billet aluminum rather than a forged blank, the receiver retains the full strength of that alloy while allowing the internal geometry required for the integrated hinge — a profile that forging dies cannot practically produce. The black anodized finish is applied over that billet construction and provides corrosion resistance without adding meaningful thickness to the fitment surfaces.

Because this is a stripped lower, you select every component of the trigger group, grip, and stock yourself, which makes it a practical starting point for a purpose-built folding rifle or pistol build. It accepts standard AR-15 lower parts kits and is compatible with upper receivers chambered in .223 Rem/5.56 NATO as well as other AR-15 format cartridges. Shield Arms patents the integrated folder design, so this specific form factor is not replicated by generic lower receivers on the market.

This is a receiver, not a complete firearm, and it ships to a licensed dealer for transfer. Builders looking to reduce overall carry length without compromising the rigidity of the lower itself will find the integrated approach meaningfully cleaner than the adapter route.