.308 Winchester 20" Barrel and Bolt Carrier Group Combo

Maximize the accuracy, range, and long-term reliability of your large-frame AR build with the .308 Winchester 20" Barrel and Bolt Carrier Group Combo. Designed to streamline your AR-10 assembly, this package pairs a precision-machined 20-inch 4150 Chromoly Steel barrel with a heavy-duty, salt bath nitride bolt carrier group for seamless lockup and smooth cycling right out of the box.

The 20-inch barrel features a Light SOCOM profile, a 1:10 twist rate optimal for standard to heavy .308 Win / 7.62x51mm loads, and a rifle-length gas system designed to soften recoil and smooth out action cycling. Topped off with 5/8x24 threading for your choice of muzzle device, both the barrel and BCG feature a durable Black Nitride finish that resists wear, corrosion, and severe operational heat.

Key Features:

20" .308 Winchester Barrel:

• 4150 Chromoly Steel: Constructed from high-strength steel with a durable Black Nitride coating.
• Light SOCOM Profile: Balances barrel rigidity and heat dissipation without adding excessive front-end weight.
• Rifle-Length Gas System: Uses a .750 gas block journal for smooth cycling and reduced felt recoil.
• 1:10 Twist Rate: Ideal for stabilizing a broad range of bullet weights in .308 Win / 7.62x51 NATO.
• Standard Threading & Ramps: Features 5/8x24 muzzle threads and M4 feed ramps for reliable feeding.
• Custom Engraving: Spiral engraved caliber markings near the muzzle break.

.308 Bolt Carrier Group:

• 8620 Steel Carrier: Machined to exacting mil-spec dimensions for robust performance.
• Salt Bath Black Nitride Finish: Delivers low friction, high wear resistance, and easy cleaning.
• Staked Gas Key: Properly staked to ensure proper gas containment and long-term operational integrity.