Caliber: 308 Win. Capacity: (1) Magpul 10 round; accepts SR-25 pattern magazines. Barrel: 16”, 18”; Criterion 1:10 twist, stainless-nitride finish. Upper/Lower Receivers: Forged 7075 aluminum. Stock: Magpul Gen 3 PRS buttstock. Grip: Magpul MOE. Sights: Optics ready top rail. Weight: 8.2 lbs. for MI-10F-16M. Features: Midwest Industries 308 Bolt carrier group, 12” M-LOK handguard, two chamber enhanced muzzle brake, mid-length gas system .750-in. gas block, MI-HDEP heavy-duty quick-detach end plate. Add $50 for 18” Criterion barrel. Introduced 2015. Subtract 13% for the Nitride finish, 16″ M-LOK variant.