Caliber: 5.56 NATO
Barrel: 16″, 4150 CrMoV steel, medium profile, with black nitride finish
Twist Rate: 1:8 RH
Gas System: mid-length or carbine-length depending on the variant
Upper Receiver: Forged 7075-T6 aluminum, flattop A3 style
Lower Receiver: Either “Carbon” lower or the DB15 lower (forged)
Stock & Grip: Commonly Magpul MOE or CTR stock, MOE style grips.
Muzzle device: typically an A2 flash hider (1/2 x 28 thread)
Weight: around 6.6 ‒ 6.8 lb depending on handguard & furniture
Length (collapsed / extended): approx 32.5 in / ~36 in depending on stock setup