The Spartan Zero 7.5-inch AR-15 pistol upper build kit from Davidson Defense is crafted for uncompromising performance. Chambered in 5.56 NATO, this build kit features a 7.5-inch government-profile barrel made from 4150 CrMoV steel, finished with a phosphate coating for durability. The barrel twist rate is 1:7, suitable for stabilizing a variety of projectiles. The upper receiver is constructed from 7075 T6 aluminum, anodized for added resilience, and includes M4 feed ramps. This build kit incorporates an aircraft-grade aluminum M-Lok handguard in black, ensuring a lightweight yet robust platform. The kit is equipped with a Recoil Technologies micro low-profile gas block and an A2 birdcage flash hider. With precision parts and durable materials, the Spartan Zero build kit provides reliability and performance for compact shooting applications, making it an excellent choice for any gunsmith who enjoys freedom.
Caliber: 5.56x45mm NATO
Barrel Material: 4150 CrMoV
Barrel Thread Pitch: 1/2x28
Barrel Length: 7.5-inch
Barrel Finish: Phosphate
Barrel Profile: Government
Barrel Twist Rate: 1:7
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Handguard Material: Aircraft-Grade Aluminum
Handguard Color: Black
Handguard Style: M-Lok
Gas Block Size: 0.750
Gas Block Name: Recoil Technologies Micro Low-Profile Gas Block for .750 O.D Barrel Steel
Muzzle Device: A2 Birdcage Flash Hider
Muzzle Thread Pitch: 1/2x28
Upper Receiver Name: Davidson Defense Stripped Upper Receiver with M4 Feed ramps
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