AR-15 .458 SOCOM 16" Upper Build / 15" Slim Mlok / Tanker

.458 Socom

AR-15 .458 SOCOM 16" Upper Build / 15" Slim MLOK Rail / Tanker Muzzle Brake | Big Bore Performance

The AR-15 .458 SOCOM 16" Upper Build delivers powerful big-bore performance in a sleek, tactical package. Perfect for CA and NY compliant builds, this upper assembly is designed for semi-auto action and features a 15" Slim MLOK free float handguard, ideal for customization and handling recoil with ease.

The AR-15 .458 SOCOM 16" Upper Build with a 15" Slim MLOK rail and Tanker muzzle brake provides exceptional recoil management and performance for big bore enthusiasts. Designed for .458 SOCOM chambering, this upper assembly offers a carbine gas system and is compliant with CA and NY regulations.

Key Features:

• Barrel:

  • 16" 4150V Steel, chrome moly, heat-treated barrel.

  • .458 SOCOM chamber, with 1/14 twist rate designed for heavy projectiles.

  • Carbine-length gas system with .875" gas block diameter, ensuring smooth cycling and reliability.

  • Socom extension for enhanced durability and performance.

  • Threaded 5/8x32 for compatibility with the .458 SOCOM tanker style muzzle brake.

• Upper Receiver:

  • Complete .458 SOCOM upper, including dust cover and forward assist, built for big bore calibers.

  • Made from 7075-T6 aluminum, and black hardcoat anodized to MIL-SPEC for maximum strength.

  • A3 Flat Top design for optimal optics mounting and ease of customization.

• Gas System:

  • Carbine-length gas tube, paired with a low-profile .875" steel gas block, ensuring reliable cycling.

• Handguard:

  • 15" MLOK Super Slim Free Float Rail, providing a lightweight yet robust platform for accessories and customization.

  • Constructed from aircraft-grade aluminum, with black hardcoat anodized finish for superior durability.

• Muzzle Device:

  • .458 SOCOM Tanker Style Muzzle Brake, threaded 5/8x32, designed to reduce recoil and muzzle rise during rapid fire.

Important Notes:

• Does not include BCG or Charging Handle. These can be purchased separately as an optional add-on at the top of the page.

• Made in the USA with precision and quality craftsmanship.

• Images may not be an exact representation of the product due to potential variations in stock, but quality and performance will remain consistent.

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