AR-15 .458 SOCOM 10.5" Faxon Gunner Upper Build / 10" Slim Mlok / Magnum Comp

.458 Socom

AR-15 .458 SOCOM 10.5" Faxon Gunner Upper Build / MLOK / Magnum Comp | Big Bore Performance

The AR-15 .458 SOCOM 10.5" Faxon Gunner Upper Build offers exceptional big-bore performance in a compact, highly maneuverable package. Designed for CA and NY compliant use, this upper assembly features a Faxon Gunner barrel chambered in .458 SOCOM, perfect for both tactical applications and heavy-duty use. The 10" Slim MLOK free float handguard allows for customization while keeping the setup lightweight, while the Magnum Linear Comp helps reduce recoil and muzzle rise.

Key Features:

• Barrel:

  • 10.5" Faxon Gunner profile, .458 SOCOM chambered, crafted from 4150 CMV steel, nitride-coated for durability and performance.

  • Button rifled with a 1:14 twist rate for optimal projectile stabilization.

  • 11/16x24 threads for easy attachment of muzzle devices, finished off with a Magnum Linear Comp to reduce recoil and muzzle blast.

  • Pistol-length gas system with .875" gas block diameter, designed for high performance in close-quarters scenarios.

• Upper Receiver:

  • Complete .458 SOCOM upper with A3 flat top design.

  • Constructed from 7075-T6 aluminum and black hardcoat anodized to military specifications.

  • No forward assist or dust cover for a clean, sleek look.

• Gas System:

  • Pistol-length gas tube with 1.1" gas block journal length for reliable and smooth cycling.

• Handguard:

  • 10" Super Slim MLOK Free Float Rail made from aircraft-grade aluminum, ensuring both strength and light weight for easy handling and improved accuracy.

• Muzzle Device:

  • Magnum Linear Comp in 11/16x24 threading, providing recoil management and muzzle rise reduction.

Important Notes:

• Does not include BCG and Charging Handle. These can be purchased separately.

• Images may not be an exact representation of the product as designs may vary based on stock availability, but the quality will remain consistent.

• Proudly made in the USA.

Compatible with Big Bore Mil Spec AR-15 Lower Receivers adjusted with 4.3 oz buffer for proper cycling.