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CMMG 35D5F0A: CMMG's Barrel Sub-Assembly is ideal for building your custom AR-15 upper group. It comes with properly installed M4 barrel extension. Accuracy matters with any build, and with this 16.1 Barrel chambered in .350 Legend there's no need to worry. Made from 4140CM steel with a nitride finish for superior durability. Works with CMMG's Mk4 (AR15) Uppers.
Perfect for building your custom Mk4 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced. Made of 4140CM with a SBN Finish. - CALIBER: .350 Legend - BARREL: 16.1 1:16 twist medium taper 4140CM SBN - MUZZLE: Threaded 1/2-28 (9mm) - GAS Port LOCATION: Carbine Length .750 Gas Block Journal - WEIGHT: 1lb 9oz