1.375-24 Bravo (HUB, “ASR”) 3/4″ Extension




Made from 17-4 H900 Stainless Steel, this extension allows you to run longer muzzle devices with Bravo adapters that would not otherwise fit in some suppressors. It will give an extra 3/4″ of clearance for muzzle devices with any Bravo pattern adapter.

These adapters have a smooth exterior profile with 5 spanner wrench notches and are either Natural or finished in SOCOM Flat Black Moly Resin as a default.  Other color options are available to select from.  Please anticipate an additional 5-10 business days for color application.

*Stacking extensions is not recommended, and if done for the purpose of increasing blast chamber volume could be considered the making of a new silencer by ATF.  If you choose to do so, it is at your own risk.

Diameter: 1.5″
Overall length: 1.2″
Weight: 1.6 Ounces
Male Threads: 1.375-24
Female Threads: 1.375-24
Through bore: 1.2″
Material: 17-4 H900 Stainless Steel

These adapters install/remove with 1.5″ or adjustable spanner wrenches. We recommend the OTC 4791 adjustable spanner wrench, which will work with many mounts & adapters of varying diameters as well as some suppressor bodies.

Additional information

Moly Resin

Natural, SOCOM Black

3 responses to “1.375-24 Bravo (HUB, “ASR”) 3/4″ Extension”

    Linh Nguyen
    October 27, 2023
    Super fast shipping and great product!
    April 17, 2023
    Awesome machining, quality and coating! Thoroughly impressed with the finished product. Worked out perfect and brought can flush with the end of the rail.
    September 16, 2022
    Bought this to help a suppressor I own clear a muzzle device. Excellent quality, fit my suppressor and my keymo device perfectly. Insanely quick shipping and even got the best gummy bears of all time. Have a about 600 rounds through the suppressor with the extension with zero issues. Has not loosened up on me at all. Great product.

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1.375-24 Bravo (HUB,
1.375-24 Bravo (HUB, "ASR") 3/4" Extension
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