The Marlin 336 Dark Series features a threaded barrel, with factory installed match polished radial muzzle break; Nylon reinforced polymer stock with M-LOK attachment slots; cheek riser included for an optimum sight picture when using an optic; Picatinny rail; Fiber optic front sight with a tritium ring; aluminum handguard features M-LOK; Flush cup sockets for QD sling swivels; positive, push-button, cross-bolt manual safety and traditional half-cock hammer. Includes thread protector.