The Shield Arms SA-9 Stripped Lower Folding Black is a purpose-built 9mm AR-pattern lower receiver designed around Shield Arms’ patented folding lower system. Machined from 7075-T6 billet aluminum and finished in a durable matte black hard-coat anodizing, this compact foundation accepts Glock-pattern magazines and integrates a proprietary buffer system for smooth, reliable blowback operation. The integrated folding mechanism reduces overall length dramatically for storage or transport while maintaining a solid, repeatable lockup when deployed.

This stripped lower is ideal for building a lightweight 9mm carbine or pistol dedicated to range use, training, or home protection, especially where portability and compact storage are priorities. Its beveled magazine well speeds reloads, and compatibility with short-throw selectors allows shooters to tailor controls to their preference. Whether you are assembling a minimalist truck gun or a refined PCC trainer, the SA-9 showcases Shield Arms’ focus on innovation, precision machining, and user-focused design.

Key Features:

• Manufacturer: Shield Arms
• Model: SA-9 Gen2 Stripped Lower
• Caliber: 9mm
• Condition: New
• Action: Closed-Bolt Blowback (Lower Receiver Platform)
• Finish Color: Matte Black Hard-Coat Anodizing
• Unique Features: Integrated Folding Mechanism, Glock Magazine Compatible, Proprietary Buffer System, Beveled Magazine Well, Short-Throw Selector Compatible
• Weight: 11.2 oz