Shield Arms SA-9 Stripped Lower Features The Shield Arms SA-9 is built on a patented folding lower receiver system machined from 7075-T6 billet aluminum giving builders the strength to weight ratio expected from aircraft grade materials. The integrated folding mechanism is built directly into the lower rather than bolted on as an adapter which reduces overall length by approximately 8 to 10 inches when folded for storage or transport. Compatible with all Glock double stack 9mm magazines including aftermarket extended variants the SA-9 gives builders wide flexibility in feeding options. A proprietary buffer system uses a 7.0 ounce stainless steel buffer with configurable steel weight allowing builders to tune the action s cycling for their specific build. Mil-Spec hard anodizing per Mil 8625 Type 3 Class 2 gives the SA-9 a matte Black finish built for maximum durability under repeated use. The precision magazine well features beveled feed lips that speed up reloads under pressure and the receiver is compatible with short throw selectors in both 45 and 60 degree configurations. A threaded buffer retaining pin provides secure retention while still allowing for easy disassembly when maintenance is needed. At just 11.2 ounces this stripped lower forms a lightweight foundation for a compact 9mm carbine or pistol build using Glock magazines. Shield Arms SA-9 Stripped Lower Specifications Manufacturer: Shield Arms Model: SA-9 Type: Stripped Lower Receiver Caliber: 9mm Action: Semi-automatic Material: Aluminum Finish: Hard Anodized Lower Pattern: AR-9 Lower Type: Stripped Weight: 11.2 oz Available At: GrabAGun