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.

Only 6 Left! 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!

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.

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. Features: Pistol Grip may vary. Because the AR9 lower is machined directly from billet, it allows FM Products to add features like an integral trigger guard and a magwell …

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 …

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.This model features a 5" barrel that is incredibly maneuverable, making it ideal for home defense, or …

FM Products FM-9 AR 9mm Forward Charging Upper Receiver w/ Micro Brake FM9-FS-109 Caliber: 9mm Luger, Barrel Length: 8.5 in, w/ Free Shipping 3.5 rating with 6 reviews review & rate 22 Questions & 18 Answers

This Foxtrot Mike Products AR9 lower receiver features a hybrid polymer design combining the light weight of polymer and the durability of aluminum. It features aluminum inserts in all the high stress areas to prevent breakage allowing it to last thousands of rounds.