Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Special offer available for this product. Click here to see!
Limited Time Offer. Click here to see!
Government Export Restriction Government Export Restriction
Questions & Answers
Customer Reviews
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
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.
Most Recent Reviews
Yankee Hill 4400 SRx QD Mount by CBulloc, Verified Owner, August 8, 2025
Great little QD mount option if you want to shorten the overall length of your can! This easily helped me lose an inch or better off the overall length of my rifle. Priced well, machined well, I don't know what else you could be looking for.
Most Recent Reviews
Good Alternative to YHM QD System by ACJAM, Verified Owner, July 6, 2025
This HUB compatible mount greatly reduces the length and weight of your suppressor system. Installing is as easy as thread and snug. The SRx muzzle device of your choice the threads in and provides a great seal. I had no “walking” issues during use.
Most Recent Reviews
Nice upgrade by Gecko23, Verified Owner, May 8, 2025
Typical excellent YHM fit and finish, works as advertised, keeps suppressors from locking up on the compatible muzzle devices.
Read All 10 Reviews
Color:
Black
Finish:
Oxide
Gun Make:
Universal
Condition:
New

Code: YHM-BRD-4400

MPN: 4400

UPC: 841812101499

List: $99.95Save 18%
$81.99

Buy Together and Save

OP Bucks$2.34

Product Info for Yankee Hill 4400 SRx QD Adapter 1 3/8x24 TPI 17-4 Stainless Steel

The YHM sRx System is just what the doctor ordered! YHM’s sRx products were designed with ease-of-use and aesthetics as top priorities, and that includes the YHM sRx Q.D. Adapter (YHM-4400). This low profile Q.D. Adapter/Mounting Interface attaches to 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.image

WARNING: California`s Proposition 65

Specifications for Yankee Hill 4400 SRx QD Adapter 1 3/8x24 TPI 17-4 Stainless Steel:

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 4400 SRx QD Adapter 1 3/8x24 TPI 17-4 Stainless Steel:

  • 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 4400 SRx QD Adapter 1 3/8x24 TPI 17-4 Stainless Steel

Yankee Hill 4400 SRx QD Adapter 1 3/8x24 TPI 17-4 Stainless Steel Orderable Models

List of Orderable Models

  • Yankee Hill 4400 SRx QD Adapter 1 3/8x24 TPI 17-4 Stainless Steel, 4400 , MPN: 4400 , UPC: 841812101499 , Code: YHM-BRD-4400

Yankee Hill 4400 SRx QD Adapter 1 3/8x24 TPI 17-4 Stainless Steel 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
Compare (0)