Rearden SPB Single Port Muzzle Brake, 9/16×24 Thread, .375″ Bore, Black Nitride

The Rearden SPB is a muzzle brake for barrels threaded 9/16×24 with a 0.375″ bore, finished in black nitride. It is machined from 17-4 PH H900 steel with a black nitride surface rated at 67 HRC. As a Plan B style device it threads into Rearden Atlas and Atlas XL suppressor mounts, so the same device can stay on the barrel with or without a suppressor attached.

Rearden lists about 1.050″ of overrun with the standard Atlas mount and no overrun with the Atlas XL. Shims are not included with this thread.

Install on clean threads, dry fit with and without shims, use Rocksett and check alignment with an alignment rod before mounting a suppressor.

Specifications

• Brand: Rearden
• Model: SPB
• UPC: 850041491417
• Type: Muzzle Brake
• Thread Pitch: 9/16×24
• Bore: 0.375″
• Material: 17-4 PH H900
• Finish: Black Nitride
• Weight: 2.05 oz
• Length: 1.73″
• Length Added: 1.105″
• Mount Compatibility: Rearden Atlas, Atlas XL and Plan B style mounts