The Yankee Hill Machine sRx HUB QD Adapter (Yankee Hill Machine part no. YHM-4400) is the heart of YHM’s sRx quick-detach system. It threads onto any suppressor with industry-standard 1-3/8×24 HUB-compatible threads and gives that suppressor an sRx mounting interface. An internal taper seal in front of the threads locks the suppressor onto an sRx muzzle device and contains gases and carbon so they cannot build up on the threads. It is a low-profile adapter that Yankee Hill makes in the USA from 17-4 PH stainless steel. It is designed for the sRx system and for any suppressor with 1-3/8 inch threads.

Key Specifications

• The suppressor thread is 1-3/8×24, the industry-standard HUB-compatible size.
• Overall length is .600 inch, a low-profile adapter that stays out of the way.
• Diameter is 1.563 inches, sized to the suppressor body.
• Weight is 1.88 ounces, light for a quick-detach mount.
• The material is 17-4 PH stainless steel, a hardened stainless that handles repeated mounting.
• The finish is black oxide, a low-glare protective coating.
• An internal taper seal in front of the threads locks the suppressor on and keeps gases and debris off the threads.
• It needs no shimming or timing to the barrel, which makes setup simple.
• The design has no moving parts, with a large taper that gives consistent mounting.
• It is made in the USA by Yankee Hill Machine.

Frequently Asked Questions

What does the sRx adapter do? It attaches to a suppressor with 1-3/8×24 HUB-compatible threads and gives it the sRx mounting interface, so the suppressor locks onto an sRx muzzle device through an internal taper seal.

Do I need to time or shim it? No. Yankee Hill says the sRx system does not need to be shimmed or timed to the barrel.

What muzzle devices does it pair with? The sRx muzzle devices, such as the sRx flash hiders and muzzle brakes. Yankee Hill designs the sRx devices to be paired with this adapter.

Buy the Yankee Hill Machine sRx HUB QD Adapter, 1-3/8×24 Suppressor Thread

If you want a clean, low-profile suppressor setup that is built for repeated use, the sRx adapter is where the system starts. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and browse more suppressor parts and accessories while you are here.