Yankee Hill sRx Flash Hider 1/2x28
Not Yet Rated | Write the First Review SKU: 222-YAN-YHM-4405-28
UPC: 841812101543

YHM sRx Flash Hider 1/2x28

If you want a suppressor-ready flash hider that keeps your rifle clean, compact, and easy to live with, the YHM sRx Flash Hider 1/2x28 is an excellent place to start.

This is the long 1/2x28 version of YHM’s sRx flash hider, commonly identified as YHM-4405-28. It was designed for shooters who want a low-profile muzzle device that works within the YHM sRx system without adding the extra bulk that comes with many older quick-detach mounts. YHM positions the sRx line around aesthetics, ease of use, and minimal added length and weight, and that is exactly why this model is attracting so much exact-fit search intent.

Why this version stands out

For many AR-pattern rifles, thread pitch is the first thing buyers care about. They are not searching for a generic sRx flash hider. They want to confirm that they are buying the 1/2x28 version, and they want that confirmation fast.

That is why so many ranking retailer pages lead with the full variant name. This page should do the same. It is the YHM sRx Flash Hider 1/2x28, part number YHM-4405-28, built for shooters who want a sleeker suppressor mount and a simpler overall setup.

Built around the YHM sRx system

The biggest reason to choose the sRx system is how streamlined it feels compared with larger QD mounting systems. YHM says the flash hider must be paired with the YHM sRx Adapter (YHM-4400), and that the adapter side connects to the industry-standard HUB 1-3/8 x 24 thread pattern. YHM also highlights a large taper in front of the threads for consistent mounting, plus a no-timing design that removes the usual fuss of shims and clocking.

Compact, light, and easy to use

According to YHM, the sRx Flash Hider measures 2.30 inches in length, .9375 inches in diameter, and weighs 2.176 ounces. It is made from 4140 steel, finished in black oxide, and manufactured in the USA. YHM also lists it for 9mm and smaller calibers. That combination of low weight and small profile is one of the clearest reasons this model competes well against bulkier suppressor mounts.

Product Highlights

• 1/2x28 thread pitch

• YHM-4405-28 variant

• low-profile sRx mounting design

• requires the YHM sRx Adapter (YHM-4400)

• compatible with HUB 1-3/8 x 24 suppressor-side mounting through the adapter

• no need to shim or time to the barrel

• no moving parts

• large taper for consistent mounting

• 4140 steel construction

• black oxide finish

• made in the USA

Fitment and use case

This version is for barrels with 1/2x28 threads. It makes the most sense for shooters who want a lighter, cleaner suppressor mounting solution and who prefer a streamlined look over a larger, more traditional QD muzzle device. It is also a smart fit for buyers already committed to the YHM sRx ecosystem and looking for the exact long flash hider variant for a 1/2x28 host.

Specifications

• Manufacturer: Yankee Hill Machine

• Model: sRx Flash Hider

• Variant: YHM-4405-28

• Thread Pitch: 1/2x28

• Length: 2.30 inches

• Diameter: .9375 inches

• Weight: 2.176 oz

• Material: 4140 steel

• Finish: Black oxide

• Caliber Rating: 9mm and smaller

• Country of Origin: Made in USA

FAQ

What thread pitch does this version use?

This version uses 1/2x28 threads.

What is the variant or part number for the 1/2x28 version?

Retailer listings identify the long 1/2x28 version as YHM-4405-28.

Does this flash hider need an adapter?

Yes. YHM states that the sRx Flash Hider must be paired with the YHM sRx Adapter (YHM-4400).

What suppressor thread standard does the system use?

YHM says the sRx adapter side attaches to the industry-standard HUB 1-3/8 x 24 thread pattern.

Do I need to shim or time it to the barrel?

YHM says there is no need to shim or time to the barrel.

How big is the YHM sRx Flash Hider?

YHM lists it at 2.30 inches long, .9375 inches in diameter, and 2.176 ounces.

What is it made from?

YHM lists 4140 steel construction with a black oxide finish.

What caliber range is it intended for?

YHM lists it for 9mm and smaller calibers.