Converts a 9/16x24 muzzle, common on 6.5 Grendel barrels, to 5/8x24 for brakes and suppressor mounts.
This version of the M4 Muzzle Thread Adapter converts a 9/16x24 barrel thread, which Precision Armament notes is used on most 6.5 Grendel barrels, to a 5/8x24 external thread. That opens the much larger selection of 5/8x24 brakes and suppressor mounts to a Grendel. Internal and external threads are single-point cut in the same operation to UNEF Class 3 tolerances for concentricity.
It is 0.625 inch long with a 0.825-inch OD and 0.750-inch wrench flats on the shoulder, weighs 0.24 ounce, and moves the muzzle device only 0.100 inch forward. It is machined from pre-hardened HTSR 400-series stainless, in PVD matte black or matte stainless.

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Add the Precision Armament M4 Muzzle Thread Adapter (9/16x24 to 5/8x24) to your build and see how it enhances your platform.