Rearden Mfg Mini 1/2-28 Square .456 Bore Heat Treat Muzzle Device

17-4 PH H900 Atlas and Atlas XL Compatible Plan B Compatible Atlas Adapter Overrun Approximately 0.050a ^2 Atlas XL Adapter No Overrun Black Nitride Finish (67 HRC Surface Hardness) Shims Not IncludedAlways use an alignment rod to ensure that the entire system is set up correctly. Make sure all surfaces are cleaned and the muzzle device has been torqued and Rockset to the barrel. Use on a Q can voids your warranty, be warned.Torque the muzzle device to approximately 15-25 ft lbs. Make sure the