Product Description
The First Act 16-inch AR-15 .458 SOCOM Rifle Full Build Kit from MCS provides all necessary components for a complete assembly, tailored for gunsmiths seeking a robust tactical platform. The kit features a 16-inch Bear Creek barrel made from 4150 Chrome Moly Vanadium with a nitride finish, offering durability and performance with a 1:14 twist rate. The carbine gas system supports reliable cycling, while the 15-inch free float extended quad rail handguard facilitates versatile mounting options.
The stripped upper receiver, crafted from 7075-T6 forged aluminum, features a large ejection port and is anodized in black for longevity. A SOPMOD style collapsible stock provides comfort and storage flexibility, paired with a heavy-duty 6-position buffer tube. This complete rifle kit weighs in at 88.72 ounces, making it a suitable choice for precision shooting and heavy-duty applications in the .458 SOCOM caliber.
Specifications
Caliber: .458 SOCOM
Barrel Length: 16 inches
Barrel Name: Bear Creek 16" .458 SOCOM, Carbine Gas, HBAR, Parkerized
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Twist Rate: 1:14T
Barrel Finish: Nitride
Barrel Profile: SOCOM
Barrel Gas System Length: Carbine
Barrel Thread Pitch: 5/8x32
Gas Block Size: 0.936
Handguard Length: 15 inches
Handguard Style: Free Float Extended Quad Rail
Handguard Color: Black
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
Bolt Carrier Name: .458 SOCOM / .450 Bushmaster Bolt Carrier Group
Charging Handle: AR-15 M4 Charging Handle
Upper Receiver Name: Stripped Upper Receiver .450/.458, Large Ejection Port
Upper Receiver Material: 7075-T6 forged aluminum
Upper Receiver Finish: Anodized Black
Muzzle Thread Pitch: 5/8x32
Rifle Stock: SOPMOD Style Collapsible Stock with Storage Compartments
Buffer Tube Type: Heavy-Duty 6-Position Buffer Tube
