10mm Auto Barrel 10.5" 1-16 Twist 4150 Steel
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specifications

Manufacturer:

Brownells

Platform:

AR-15

Caliber:

10mm

Gas System Length:

Carbine

Barrel Length:

10.5"

twist rate:

1:16

    10mm Auto Barrel 10.5" 1-16 Twist 4150 Steel

    Caliber Manufacturer Color Weight Merchant Price Merchant URL
    10mm Brownells None None None $149.99 Brownells Add

    Prices last checked September 2026. Prices and availability change often, so confirm on the retailer's site.

    The Brownells 10mm Auto AR-15 barrel allows fans of the powerhouse 10mm cartridge to built an AR-style carbine or pistol chambered in their favorite pistol round, enhancing its usability with a new platform. The Brownells 10mm Auto AR-15 barrel is machined from triple stress-relieved 4150 steel, which features a nitride coating for added strength. Each barrel comes equipped with 360-degree feed ramps and a hand-polished chamber that ensures reliable extraction. Features 1:16 rate of twist Designed to work with any blowback .40 S&W bolt-carrier group Features 11-degree target crown Includes threaded muzzle with 5/8x24 TPI thread pitch The Brownells Mfg: Brownells

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