The Yankee Hill Machine sRx HUB QD Adapter (brand 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. It is a low-profile adapter that Yankee Hill makes in the USA from 17-4 PH stainless steel.

Key Specifications

• The adapter fits 1-3/8×24 HUB-compatible threads, the industry-standard suppressor thread.
• The overall length is .6-inch, a short adapter that keeps the suppressor compact.
• The diameter is 1.563 inches, sized to sit flush with the suppressor body.
• It weighs 1.88 ounces, lighter than many quick-detach mounts.
• The material is 17-4 PH stainless steel, a hardened steel suited to a repeatedly used mount.
• The finish is black, matching typical suppressor hardware.
• An internal taper seal in front of the threads locks the suppressor on and contains carbon buildup.
• The design is timeless, so there is no shim or timing to the barrel.
• There are no moving parts, which means nothing to wear out or fail.
• It is made in the USA and covered by Yankee Hill’s lifetime manufacturer’s warranty.

Frequently Asked Questions

What does the sRx adapter work with? It works with the YHM sRx muzzle devices and any suppressor with 1-3/8×24 threads, according to Yankee Hill. The muzzle devices, such as the sRx flash hiders and brakes, are sold separately.

How does the sRx taper seal work? An internal taper in front of the threads locks the suppressor onto the sRx muzzle device and forms a tight seal. Yankee Hill says that keeps gases and debris from building up on the threads.

Do I need to time the adapter? No. Yankee Hill describes the sRx system as timeless, with no shimming or timing to the barrel.

Buy the Yankee Hill Machine sRx HUB QD Adapter

If your suppressor has 1-3/8×24 threads and you want to move it quickly between rifles, this adapter is the piece that makes the sRx system work. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and browse more Class 3 parts and accessories while you are here.