The Spartan Zero 7.5-inch AR-15 5.56 NATO Pistol Complete Upper Build Kit from Davidson Defense delivers high-quality, durable components tailored for reliable performance. This complete upper assembly features a 7.5-inch barrel made of 4150 CrMoV steel with a phosphate finish and a government profile, boasting a 1:7 twist rate for optimal accuracy. The upper receiver is constructed from robust 7075 T6 aluminum, anodized for corrosion resistance. Included is a premium AR-15 5.56 Bolt Carrier Group made from 9310 alloy steel with a nitride finish, ensuring longevity and consistent operation. The handguard, crafted from lightweight 6061-T6 aluminum and finished in black, utilizes an M-Lok style for versatile accessory attachment. A low-profile gas block, compatible with a .750 O.D. barrel, along with the Phase 5 Weapon Systems Inc. Bushmaster Izzy Flash Hider, rounds out this complete upper kit, making it ideal for gunsmiths seeking customization and performance.
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: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: M-Lok
Charging Handle: AR-15 M4 Charging Handle Mil-Spec Quality
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
Bolt Carrier Name: Premium AR-15 5.56 Complete Bolt Carrier Group
Upper Receiver Name: Stripped Upper Receiver with M4 Feed Ramps
Gas Block Size: 0.750
Gas Block Name: Recoil Technologies Micro Low-Profile Gas Block for .750 O.D Barrel Steel
Muzzle Device: Phase 5 Weapon Systems Inc Bushmaster Izzy Flash Hider
Muzzle Thread Pitch: 1/2x28
To view the most up-to-date shipping times Click HERE. To view Warranty, Returns, Terms & Restrictions Click HERE.
