Rearden R2 5.56 Flash Hider - Plan B - 1/2x28 - Square Shoulder - Nitride

The Rearden R2 Flash Hider doubles as a Plan B suppressor mount, giving AR owners a compact, durable muzzle device that accepts Plan B-compatible suppressor adapters, including Rearden's Atlas and Atlas XL lines.

Features:

• Flash hider and Plan B mount combined in one compact device
• Threaded 1/2x28 for direct installation onto a matching barrel
• .375-inch bore clears calibers up to .338 Lapua and 9mm
• Square-shoulder design for barrels with a traditional 90-degree shoulder
• Black nitride finish with 67 HRC surface hardness
• Machined from 17-4 PH stainless steel
• Plan B taper mount, also compatible with Rearden Atlas and Atlas XL adapters

This square-shoulder version is meant for barrels with a flat shoulder behind the threads, so make sure it seats flat and square against the shoulder. Timing it to a specific orientation takes shims, and some barrels without a thread relief may need one.

Rearden's Plan B instructions call for cleaning all surfaces, using an alignment rod whenever a suppressor goes on a Plan B-type taper mount, and torquing the muzzle device to roughly 30 ft-lbs with a thread locker such as Rocksett, then the suppressor to about 10 ft-lbs. Nitride gives a tighter seal, so proper torque matters. Check your suppressor maker's warranty terms before pairing.

Rearden builds Plan B muzzle devices as the mounting point for Plan B-compatible adapters. With a Rearden Atlas adapter (sold separately), they fit most suppressors that use a 1.375x24 rear thread.