Due to the size of the .300 Win. Mag. cartridge, pairing with an AR-15 or AR-10 receiver is impossible, so NEMO (New Evolution Military Ordnance) Arms took to the drawing board to create a rifle that houses qualities of the AR platform, and did so around a magnum cartridge that’s been a favorite among long-range shooters and hunters.
Troy Defense’s Model SPAR-S3F-18MT-01 is a 50-state legal pump-action rifle that mimics the design and features commonly found on today’s popular AR-10 rifles. It feeds from SR25 magazines and is chambered for the hefty, but fun to shoot, .338 Fed. cartridge.