The GLFA AR10 rifles barrels have 5R rifling, as well as being double thermally stress-relieved and air-gauged. The rifle features a heavy barrel; rifle length gas tube; threaded barrel; aluminum receiver; M-LOK handguard; Picatinny rail and a Mil-spec trigger. Includes one magazine and 5 assorted SKU's of Out The Front style knives that feature a 3.50" D2 Steel blade and a 4.50" 6061 Aluminum Grip. These come with glass breakers, belt clip and feature a premium Cerakote finish in these colors- Black, Tungsten, Bronze, FDE, and/or OD Green. They may be serrated or smooth blades.