What is the SA-15 Stripped Folding Lower Receiver?

Shield Arms’ patented folding lower receiver with integrated folding mechanism – NO ADAPTER required. Unlike traditional folding adapters, the folding mechanism is built directly into the billet aluminum receiver for a lighter, stronger, more reliable design. Perfect for building custom folding AR-15 rifles and pistols.

• Key Innovation: No folding adapter needed – mechanism integrated into receiver
• Construction: 7075-T6 billet aluminum – stronger than forged
• Use: Build custom folding AR-15 rifles or pistols (5.56, .300 BLK, 9mm, etc.)

Revolutionary Folding Technology – No Adapter Required

The Shield Arms SA-15 Stripped Folding Lower Receiver represents a revolutionary advancement in AR-15 design. Unlike traditional folding AR-15s that require bulky, heavy folding adapters installed between the upper and lower receivers, the SA-15 features a patented folding mechanism integrated directly into the lower receiver.

This innovative design eliminates the need for separate folding adapters, resulting in a lighter, stronger, more compact folding rifle or pistol. The SA-15 is a complete mil-spec lower receiver that accepts all standard AR-15 parts, while providing true folding capability for compact storage and transport.

Build your dream folding AR-15 with complete freedom to choose your upper receiver, barrel length, caliber, furniture, and accessories. Compatible with 5.56 NATO, .300 Blackout, 9mm, and other AR-15 calibers.

Key Features & Advantages

Patented Integrated Folding Mechanism

• No adapter required – folding mechanism built into the receiver itself
• Lighter weight – eliminates heavy folding adapter (typically .5 lbs or more)
• Stronger design – fewer points of failure than adapter systems
• Compact folding – folds tighter than adapter-based systems
• Reduced complexity – simpler build process, fewer parts
• Improved balance – weight distributed optimally without adapter

Premium Construction

• 7075-T6 billet aluminum – aerospace-grade material, stronger than forged receivers
• Precision CNC machined – tight tolerances for perfect fit and function
• Mil-spec dimensions – accepts all standard AR-15 parts and components
• Flared magazine well – faster, easier reloads
• Integral trigger guard – streamlined appearance, enhanced strength
• Made in USA – precision manufactured in Bigfork, Montana

Versatile Build Platform

• Multiple caliber compatibility – 5.56 NATO, .300 Blackout, and more
• Rifle or pistol builds – works with any barrel length configuration
• Standard AR-15 parts – buffer tube, stock, grip, trigger, LPK all compatible
• Upper receiver compatibility – works with any mil-spec AR-15 upper
• Custom configurations – build exactly what you want

Specifications

Caliber Marking: Multi
Material: 7075-T6 Billet Aluminum
Finish: Mil-Spec Hard Coat Anodized (Type III, Class 2)
Folding Mechanism: Patented Integrated Design
Trigger Group : Accepts all mil-spec AR-15 triggers and LPKs
Trigger Guard: Integral (built into receiver)
Buffer System: Proprietary buffer included
Magazine Well: Flared for enhanced reloads
Upper Compatibility: All mil-spec AR-15 uppers
Weight: 2.45 lbs (complete assembly)
Warranty: Lifetime
Made in the USA

What’s Included

The SA-15 Stripped Folding Lower Receiver includes:

• (1) SA-15 Stripped Lower Receiver with integrated folding mechanism and buffer

Item must ship to an FFL dealer. Must be 21 to purchase. Please have your dealer E-mail or fax a copy of their license, including your name and order number, to us at sales@jsesurplus.com or fax to 636-547-2618. Please include YOUR dealers’ info in the SHIPPING OR comment section during checkout.