Caliber: 5.56 NATO, 300 BLK. Direct impingement. Barrel: 13.75” (added 2023, pinned & welded for 16.1” barrel length), 16.5” Match-grade Nitride heat-treated Puritan barrel, 1:8 twist, 1/2x28 barrel threads. Lightweight carbine with some upgrades. Ambidextrous rear sling mount, Renegade Rail with heat sink barrel nut, DI bolt carrier group with Roller Cam Pin, single-stage straight match grade trigger, Strike Eagle Ambi Charging Handle, Micro B single-port muzzle brake. Weight: 6.18 lbs. Add $67 for 13.75” P&W barrel or 300 BLK. Introduced 2019.