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Questions & Answers
Customer Reviews
Helpful Positive Review
Good product by Justin, Verified Owner, March 31, 2025
Like somebody else mentioned, the product label is a bit confusing as this item isn't specific to 9mm. This is YHMs SRx QD adapter that will mount up to any of their, or any other brands, standard hub 1.375x24 compatible silencer. The product thread...
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1/1 found this helpful
Helpful Positive Review
I Think You Labeled it Wrong by Ed, Verified Owner, March 13, 2024
This is the adapter for all YHM's SRX muzzle devices... not just 9mm as indicated in the product description.
8/8 found this helpful
Helpful Positive Review
Perfect!!! by Shooter2484, Verified Owner, May 21, 2024
Shortens over all length of suppressor and attaches really easy! No issues with suppressor coming loose so far. Glad i purchased srx adapter, makes life a little easier.
1/1 found this helpful
Most Recent Reviews
Get some sRx muzzle devices to go with it. Makes it to swap hosts.
Most Recent Reviews
good QD method by willy, Verified Owner, March 12, 2026
SRX system seems G2G, thanks OP for the fair pricing.
Most Recent Reviews
Yankee Hill SRX by David, Verified Owner, February 28, 2026
A great mounting option from YHM. This system should have come with the suppressor. Light weight and is 100% better than the included mounting system that came with the suppressor.
Read All 12 Reviews
Color:
Black
Finish:
Oxide
Gun Make:
Universal
Condition:
New

Code: YHM-BRD-4400-4400

MPN: 4400

UPC: 841812101499

List: $99.95Save 20%
$79.99

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OP Bucks$3.30

Product Info for Yankee Hill Machine sRx QD Adapter

YHMs line of sRx products were designed with aesthetics and ease-of-use as the top priorities, and that is no different for the YHM sRx Q.D. Adapter (YHM-4400). This Low Profile, Q.D. Adapter/Mounting Interface attaches to the industry standard (HUB) 1-3/8 x 24 threads. It features an internal taper seal-in front of the threads-that locks your suppressor on and forms a tight seal to contain gasses while in-use. This means no gasses or debris can build up on the threads. The sRx Q.D. Adapter must be paired with one of YHMs sRx Muzzle Devices (4405's, 4405-MB's, and 4401-MB's). The sRx Q.D. Adapter adds minimal length and weight to the suppressor set up, while also allowing you to reap all the benefits of the new YHM sRx System-when used in conjunction with a YHM sRx Muzzle Device. The full YHM sRx (Suppressor Rx) System will be the obvious choice for someone looking for a sleek, low-profile, suppressor set up-thats also built to withstand rigorous use. This is their prescription for the shooter who cares about the aesthetics of their build as well as its ease-of-use. Some of the exciting new benefits of the YHM sRx System are as follows: TIMELESS. (No need to shim/time to barrel). Small/low profile. No moving parts. Large taper in front of the threads allows for consistent mounting. Lighter than many Q.D. mounting offerings on the market. Can be permanently attached to firearm barrel needed.image

WARNING: California`s Proposition 65

Specifications for Yankee Hill Machine sRx QD Adapter:

Manufacturer: Yankee Hill Machine
Color: Black
Finish: Oxide
Fabric/Material: 17-4PH Stainless Steel
Gun Make: Universal
Condition: New
Length: 0.6 in

Features of Yankee Hill Machine sRx QD Adapter:

  • TIMELESS. (No need to shim/time to barrel)
  • Small/low profile
  • No moving parts
  • Large taper in front of the threads allows consistent mounting
  • Lighter than many Q.D. mounting offerings on the market
  • Can be permanently attached to firearm barrel if needed

Package Contents:

  • Yankee Hill Machine sRx QD Adapter

Yankee Hill Machine sRx QD Adapter Orderable Models

List of Orderable Models

  • Yankee Hill Machine 4400 sRx QD Adapter 9mm Luger 3/8in-24 tpi 17-4 Stainless Steel, 4400 , MPN: 4400 , UPC: 841812101499 , Code: YHM-BRD-4400-4400

Yankee Hill Machine sRx QD Adapter Unavailable & Discontinued Models

List of Unorderable Models

  • USED Yankee Hill 4400 SRx QD Adapter 9mm Luger 3/8-24 Tpi 17-4 Stainless Steel, EDEMO2, Condition Fair, Other , MPN: 4400-EDEMO2 , Code: YHM-BRD-4400-EDEMO-OT-D
  • USED Yankee Hill 4400 SRx QD Adapter 9mm Luger 3/8-24 Tpi 17-4 Stainless Steel, EDEMO1, Used, Condition Like New , MPN: 4400-EDEMO1 , Code: YHM-BRD-4400-EDEMO1
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