Rearden R2 Fh 1/2-28 Nitride

The Rearden R2 Flash Hider in 1/2-28 thread pitch is a Plan B mount–compatible muzzle device built for shooters who want a durable, precision-engineered solution for flash reduction and suppressor mounting. Built from 17-4 PH stainless steel with a black nitride finish, the R2 delivers both corrosion resistance and the tighter seal that nitride coating provides—critical for reliable suppressor performance and repeatability. This is the flash hider for AR-platform rifles and other firearms with 1/2-28 muzzle threads.

The nitride finish reaches 67 HRC surface hardness, making it tough enough to handle repeated suppressor installation cycles and field use without degradation. Because of that enhanced seal, proper installation matters: the muzzle device must be torqued to spec (approximately 30 ft lbs), Rockset, and squared against the shoulder to ensure the system—especially when running a suppressor—functions as intended and maintains zero. An alignment rod during setup confirms everything is coaxial before you torch the Rockset.

Rearden designed the R2 to work seamlessly with Plan B–type suppressor mounts, so if you're building a suppressed rifle around that platform, this flash hider fits natively. Keep in mind that shims are not included with the R2; if your barrel lacks a thread relief cut by the manufacturer, you may need shims to time the device to your preferred orientation. When you do add a suppressor, clean both the threads and tapers, then torque the can itself to 10 ft lbs to lock it in without cross-threading.

This is a no-frills, purpose-built component from a shop that understands suppressed shooting. If you're running a Q suppressor specifically, check compatibility before pairing it with the R2, as that combination may affect your warranty. For most Plan B setups and standard suppressor hosts, the Rearden R2 Nitride is a solid, proven muzzle device for the shooter who values durability and precision alignment.

Key Features

• Plan B mount–compatible flash hider for suppressor-ready setups
• 17-4 PH stainless steel construction with black nitride finish (67 HRC hardness)
• Also compatible with Atlas and Atlas XL mounting systems
• Tight, consistent seal for repeatable suppressor performance
• 1/2-28 thread pitch for modern AR and precision rifles
• Requires proper torque and Rockset installation for optimal function

Specifications

Frequently Asked Questions

What suppressor mounts does the Rearden R2 Fh work with?

The R2 is designed for Plan B–type mounts and is also compatible with Atlas and Atlas XL mounting systems. It integrates directly with these suppressors without adapter sleeves, but always verify compatibility with your specific can before purchase.

Will this flash hider work on my AR with a 1/2-28 threads?

Yes—the 1/2-28 thread pitch is standard on most modern AR-15 barrels and many precision rifles. If your barrel has 1/2-28 muzzle threads, the R2 will fit. You'll need an alignment rod during installation to ensure the device is perfectly square and coaxial before Rockset application.

Do I need shims to time the R2 flash hider?

Shims are not included with the R2. If your barrel has a thread relief cut by the manufacturer, you typically won't need them. However, if your barrel lacks that relief and you want to time the device to a specific rotational position, you'll need to purchase shims separately to dial in your preferred orientation.

What's the proper installation procedure for the R2?

Clean all muzzle threads and the flash hider thoroughly. Use an alignment rod to ensure the device sits perfectly square against the shoulder. Torque the R2 to the barrel at approximately 30 ft lbs, then apply Rockset to lock it permanently. When installing a suppressor, clean the threads and tapers again, then torque the suppressor to 10 ft lbs. Re-verify alignment after assembly.