The Spartan Surge 10.5-inch AR-15 10MM Pistol Upper Build Kit from Davidson Defense is equipped with a robust blow-back gas system and features a 10.5-inch barrel crafted from durable 4150 CrMoV steel. This barrel has a medium profile, phosphate finish, and a twist rate of 1:16 with a thread pitch of 9/16x24; ideal for a variety of muzzle devices. The upper receiver is constructed from billet 6061-T6 aluminum and finished with Type III Hardcoat anodizing to resist wear. Accompanied by a lightweight 10-inch Free Float M-Lok handguard made from aircraft-grade aluminum, this upper build kit is an excellent choice for gunsmiths seeking a durable and reliable foundation for their 10MM AR-15 pistol builds.
Platform: AR-15
Caliber: 10mm Auto
Barrel Length: 10.5-inch
Barrel Material: 4150 CrMoV
Barrel Thread Pitch: 9/16x24
Barrel Twist Rate: 1:16
Barrel Finish: Phosphate
Barrel Profile: Medium
Gas System: Blowback
Upper Receiver Material: Billet 6061-T6 Aluminum
Upper Receiver Finish: Type III Hardcoat Anodized
Handguard Material: Aircraft-Grade Aluminum
Handguard Length: 10-inch
Handguard Color: Black
Handguard Style: Free Float, M-Lok
Muzzle Device: 10MM/40S&W Compensator
Muzzle Thread Pitch: 9/16-24
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