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Waterford, MI 48327 7160 Highland Rd.
248-568-1708 ockie@gerbranddefense.com
Open hours: Mon - Fri 9am - 7pm, Sat 9am - 6pm
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UPC: N/A SKU: N/A Category: Product ID: 30134


Square Shoulder.


  • 17-4 PH H900
  • Atlas and Atlas XL Compatible
  • Plan B Compatible
  • Atlas Adapter Overrun Approximately 1.050″
  • Atlas XL Adapter No Overrun
  • Nitride
  • Shims Included


Weight and Length

Thread Pitch Weight Length Length Added
.280 1/2-28 2.24 oz 1.74″ 1.115″
.375 1/2-28 2.06 oz 1.74″ 1.115″
.375 5/8-24 1.71 oz 1.74″ 1.115″
.375 14×1 LH 2.15 oz 1.74″ 1.215″

These fit the plan B type mounts.  Always 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 30 ft lbs. Make sure the muzzle device is square against the shoulder. When setting the silencer on the muzzle device, ensure that the threads and tapers are clean. Torque the suppressor to 10 ft lbs. Ensure alignment. Enjoy. The nitride finish does lead to a tighter seal, with that said, it is extremely important to torque and rockset your muzzle device to the barrel properly.

Additional information

Choose Your Muzzle Size

1/2X28, 5/8X24