Details
The Jawbreaker II 16-inch Carbine-Gas Upper is optimized for the AR-15 platform, combining precision engineering with reliable performance. Chambered in .223 Wylde, it features a heavy H-Bar profile barrel made from 4150 Chrome Moly Vanadium, providing durability and accuracy with a 1:8 twist rate. The 16-inch barrel, finished with Manganese Phosphate, utilizes a carbine-length gas system to ensure smooth cycling and operation.
The upper is constructed from 7075 T6 aluminum with an anodized finish for improved corrosion resistance. A freefloat 15-inch M-Lok handguard in black allows for versatile attachment options while minimizing weight. It includes a 0.75-inch gas block and a GI Birdcage Flash Hider. The bolt carrier is made from 9310 alloy steel and finished with nitride for enhanced wear resistance. This complete upper build is suitable for gunsmiths seeking a high-performance solution in a compact format.
Specifications
Caliber: .223 Wylde
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Thread Pitch: 1/2×28
Barrel Gas System Length: Carbine
Barrel Length: 16 inches
Barrel Finish: Manganese Phosphate
Barrel Profile: Heavy (H-Bar)
Barrel Twist Rate: 1:8
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Handguard Length: 15 inches
Handguard Color: Black
Handguard Finish: Type III Hard Coat Anodized
Handguard Style: M-LOK
Gas Block Size: 0.75
Muzzle Device: GI Birdcage Flash Hider 5.56 .223 A2
Muzzle Thread Pitch: 1/2×28
Charging Handle: AR-15 Mil-Spec Charging Handle
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
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