Specifications
Caliber: 5.56x45mm NATO
Barrel: Bear Creek Arsenal "Irithyll" AR-15 AR Pistol Barrel
Barrel Length: 7.5 inches
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Twist Rate: 1:7
Barrel Finish: Phosphate
Barrel Profile: Contour
Barrel Thread Pitch: 1/2x28
Gas System Length: Pistol
Gas Block: Micro Low-Profile Gas Block, .750 O.D Barrel Steel
Gas Block Size: 0.750
Muzzle Device: AR-15 1/2x28 TPI GI Birdcage Flash Hider
Muzzle Finish: Manganese Phosphate
Muzzle Thread Pitch: 1/2x28
Upper Receiver: AR-15 Upper Receiver, M4 Feed ramps
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Handguard Style: 7" Length Free Float Smooth Handguard
Charging Handle: AR-15 M4 Charging Handle Mil-Spec Quality
Bolt Carrier: AR-15 5.56/.223/.300/.350 Complete Bolt Carrier Group
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
Pistol Brace: Magpul BTR Pistol Brace, Black
Buffer Tube: Mil-Spec Heavy-Duty AR-15 6-Position Buffer Tube
Buffer Spring: Standard AR-15 Carbine Recoil Spring
Buffer Weight: 3 oz
Endplate: AR-15 M16 Mil-Spec Receiver End Plate