Shop Foxtrot Mike Products here at Primary Arms for the best deals and the best service! We carry FM products: ar9 uppers, ar9 lowers, & more.

Foxtrot Mike FM-9 Semi-Automatic AR-15 Pistol 9mm 5" Threaded Barrel - 7920-9MM-5 W / Free Sylvan Pistol Brace. Notify me when available!

The FM-9 models, the FM-9 Elite and FM-9 Minimalist, both machined from the same components for extreme durability. Three barrel lengths are available for both models with the Minimalist coming with a fixed barrel and the Elite features a quick-change barrel and quad rail forend.

Start your AR-9 build off right with the FM Products 9mm complete lower receiver. Because the AR9 lower is machined directly from billet, it allows FM Products to add features like an integral trigger guard and a magwell designed specifically for 9mm Glock magazines.

Start your AR-9 build off right with the FM Products 9mm stripped lower receiver. Because the AR9 lower is machined directly from billet, it allows FM Products to add features like an integral trigger guard and a magwell designed specifically for 9mm Glock magazines.

Start your AR-9 build off right with the FM Products 9mm stripped lower receiver. Features: Because the AR9 lower is machined directly from billet, it allows FM Products to add features like an integral trigger guard and a magwell designed specifically for 9mm Glock magazines.

Almost every 9mm AR will feed just fine with a standard carbine spring, and even Colt's 9mm select-fire submachine gun uses a standard carbine spring. The best match for most builds has been found to be a standard carbine 5.56 spring or a …

The Foxtrot Mike Products MIKE-9 AR9 Complete Billet Lower Receiver is made from billet aluminum with a black hardcoat anodized finish for added durability. It comes with a 6.5 oz. heavy buffer and a AR-10 .308 recoil spring for dependable performance.

This new Foxtrot Mike FM-9 is truly incredible and a really great bang for your buck. This blowback 9mm pistol comes with a smooth pistol length buffer tube and buffer/recoil spring combination tuned to cycle a wide variety of ammunition reliably.

Your pistol caliber lower receiver will be transformed into a more versatile offering when you install this FM Products FM-9 AR 9mm Forward Charging Upper Receiver w/ Micro Brake.