Mossberg Patriot Carbine 22-250 Remington Matte Blue Bolt Action Rifle - 18in - Mossberg Patriot Carbine bolt-actions are packed with features, and are offered in eight calibers and a variety of suppressor-ready barrel lengths. These compact, easy-to-handle rifles make a great choice for multi-game, multi-season hunting. Barrel Threading: 5/8 x 24 Drop box magazine Threaded/Medium Bull Barrels are Muzzlebrake/Supressor-Ready Recessed match Barrel Crown Top-Mounted picatinny Rail Spiral Fluted Bolt and Oversized Bolt Handle Patented LBA user adjustable trigger (2lbs - 7lbs)