The Stormbinder 10.5-inch 10MM AR-15 Complete Upper Build is engineered for performance and versatility. It features a robust Bear Creek AR-15 10.5" 10MM Blow-Back M4 Contour Barrel made from durable 4150 CMV steel, finished with a parkerized coating and a 1:16 twist rate for optimal projectile stability. The upper receiver is crafted from lightweight 6061 aluminum with a Type III hard coat anodized finish, providing both strength and corrosion resistance.
Equipped with a 10-inch freefloat M-Lok handguard, this build allows for the attachment of various accessories while maintaining a sleek profile. A 10mm/.40 S&W A2 Birdcage muzzle device directs muzzle rise effectively, complemented by an M4 charging handle and a New Frontier Armory bolt carrier group constructed from 8620 alloy steel with a nitride finish. This complete upper build provides a solid platform for a customized AR-15 pistol.
Barrel: Bear Creek AR-15 10.5" 10MM Blow-Back M4 Contour Barrel
Barrel Length: 10.5 inches
Barrel Profile: M4 Contour
Barrel Material: 4150 CMV
Barrel Finish: Parkerized
Barrel Twist Rate: 1:16
Barrel Thread Pitch: 9/16x24
Caliber: 10MM
Upper Receiver: Vertex Enhanced Pistol Caliber AR-15 Billet Upper Receiver
Upper Receiver Material: 6061 Aluminum
Upper Receiver Finish: Type III Hard Coat Anodized
Handguard Style: Freefloat M-LOK
Handguard Material: 6061-T6 Aluminum
Handguard Length: 10 inches
Handguard Color: Black
Muzzle Device: 10mm/.40 S&W A2 Birdcage
Muzzle Thread Pitch: 9/16x24
Muzzle Device Finish: Manganese Phosphate
Charging Handle: AR-15 M4 Charging Handle Mil-Spec Quality
Bolt Carrier: New Frontier Armory 10mm/40S&W Retro AR PCC BCG
Bolt Carrier Material: 8620 Alloy Steel
Bolt Carrier Finish: Nitride
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