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

$72.00

Description

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.

*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″ – step down to this diameter is .68″ from rear face
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.

In stock Natural finish products ship 1-2 business days. Though we usually have some in SOCOM black on hand, color selections may add 5-10 business days to ship time.

Before placing your order, please reference the provided dimensions and compare with your application to ENSURE THIS PRODUCT WILL FIT .  Mounts or adapters with a diameter in excess of 1.2″ more than .68″ from the shoulder WILL NOT FIT THROUGH THIS EXTENSION.  Due to the frequency with which these had been returned with blemishes rendering them not in new, resellable condition, extensions ordered on or after 2/27/2025 are NOT RETURNABLE.  The YHM 1.375-24 HUB 3-lug adapter is 100% a no go with this extension, same for at least the first generation B&T Surefire adapters and the OCL Surefire adapter.

No, we do not make them longer or with a larger through bore.

Additional information

Moly Resin

Natural, SOCOM Black

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

    Jason Blevins
    November 12, 2024
    Recommended by my can supplier and what a GREAT recommendation. From ease of ordering and fast reliable shipping, the 1.375-24 Bravo (HUB, “ASR”) 3/4″ Extension arrived perfectly machined.
    John Biery
    August 30, 2024
    A+ fast shipping and very precise lock up and alignment on my Silencerco 300 omega!
    Linh Nguyen
    October 27, 2023
    Super fast shipping and great product!
    Cliff
    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.
    Ty
    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
$72.00
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