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DirectDrive
07-13-2011, 03:19 AM
What is the reason behind 9/16 - 24RH muzzle threads on some of the Grendel barrels ?
Are there any drawbacks to 5/8 - 24 muzzle threads on a Grendel ?

My searching did not yield any definitive answers.
bwaites
07-13-2011, 03:27 AM
1) To avoid the accidental use of 5.56 muzzle devices.

2) None that I can find, other than being aware what is avaiable and effective for the Grendel.
Clod Stomper
07-14-2011, 01:38 AM
The 9/16x24 muzzle devices (in my experience) are smaller diameter. I have a Smith Vortex on an AA Shaw barrel (9/16) and it blends in nicely. I have a 5/8x24 YHM flash suppressor on another barrel and it looks like a huge weight hanging off the end (more than an extra 1/16"). I have no experience with other brands, so I have no idea if they are similar.

Will
DirectDrive
07-14-2011, 02:55 AM
The 9/16x24 muzzle devices (in my experience) are smaller diameter. I have a Smith Vortex on an AA Shaw barrel (9/16) and it blends in nicely. I have a 5/8x24 YHM flash suppressor on another barrel and it looks like a huge weight hanging off the end (more than an extra 1/16"). I have no experience with other brands, so I have no idea if they are similar.

Will
Yep, I'm deducting that 9/16" is more "in scale" with Grendel. Maybe some of these are 5.56 pieces reworked.
I could see where a compensator for .308 (5/8") might not be as effective for 6.5