RF Plan B / Rearden Atlas muzzle devices 

RF muzzle devices are a line of products and collaboration and line of productsbetween FCD and Revival Defense.
6315RF (1/2x28) is a .5.56mm flash suppressor/compensator
6310RF (5/8x24) is a 30 cal flash suppressor/compensator
1215RF (1/2x28) is a 5.56mm brake
1210RF (5/8x24) is a 30 cal brake
3P15 (1/2x28) is a 5.56mm flash suppressor
3P10 (5/8x24) is a 30 cal flash suppressor
In addition to being precision Plan B / Rearden Atlas compatible suppressor mounts, all of RF muzzle devices are worthy muzzle devices on their own, without a suppressor installed. The design goal focuses on RF muzzle devices being functional and capable flash suppressors and brakes without a sound suppressor attached.
RF muzzle devices can be fouind on FCD's site: www.forwardcon... as well as on Revival Defense's site: www.revivaldef...
For Plan B / Rearden adapter suppressor compatibility, Revival Defense has taken the effort publish a series of compatibility charts: www.revivaldef...