The Stormborn AR-15 Pistol Upper Build Kit pairs the Panhead Billet Upper Receiver with the Irithyll 7.5 inch 4150 chrome moly vanadium barrel in 5.56x45mm NATO and a 7 inch black free float M-LOK handguard. The Irithyll barrel has a manganese phosphate finish, a contour profile, a 1 in 7 twist rate, and a half inch x 28 thread pitch, and it uses a pistol length gas system. A micro low-profile .750 gas block and a GI birdcage flash hider round out the front end parts. BCG and charging handle are not included.
The Panhead Billet Upper Receiver is made from 6061-T6 aluminum with an anodized finish. It pairs with a 7 inch black 6061-T6 aluminum free float M-LOK handguard. The handguard provides the front end forend structure of the upper with M-LOK accessory space. The Panhead name identifies the upper receiver within this kit.
The Irithyll barrel is a 7.5 inch AR pistol barrel made from 4150 chrome moly vanadium in 5.56x45mm NATO. It carries a manganese phosphate finish with a contour profile and a 1 in 7 twist rate. The barrel runs a pistol length gas system and has a .750 gas block journal. The muzzle uses a half inch x 28 thread pitch.
The kit includes a micro low-profile gas block sized for .750 barrels. Its compact shape suits the free float M-LOK handguard. A GI birdcage flash hider threaded half inch x 28 is also included. These parts cover the front end hardware for the barrel.
Follow safe handling and manufacturer instructions.
Ensure compliance with all applicable federal, state, and local laws.
BCG and charging handle are not included.
Verify compatibility with your lower receiver and bolt carrier group before use.
Inspect all components before use.
Caliber: 5.56x45mm NATO
Barrel: "Irithyll" AR-15 AR Pistol Barrel 7.5" Contour Barrel
Barrel Length: 7.5 inches
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Twist Rate: 1:7
Barrel Profile: Contour
Barrel Finish: Manganese Phosphate
Barrel Thread Pitch: 1/2x28
Barrel Gas System Length: Pistol
Gas Block Size: 0.750
Gas Block: Micro Low-Profile Gas Block
Muzzle Device: AR-15 1/2x28 TPI GI Birdcage Flash Hider
Muzzle Thread Pitch: 1/2x28
Handguard Material: 6061-T6 Aluminum
Handguard Length: 7-inch
Handguard Style: M-Lok
Handguard Color: Black
Upper Receiver: "Panhead" Billet Upper Receiver
Upper Receiver Material: 6061-T6
Upper Receiver Finish: Anodized
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