Barret mk22 762 barrel conversion kit thread pitch

[Andrew Le]

Alright I'm restarted and google isn't providing any help. I got a barret mk22 762 barrel conversion kit. Took forever to remove the muzzle device.. i wanted to put a rearden on it . I cannot find the specific thread pitch. I'm seeing 3/4-24 but i can't confirm. I have 5/8-24 rearden ready to install but it was too small so now I'm confused.

Any help?

 

[B'N'F]

Have you measured the OD of the thread... is it close to 3/4?. 90% positive it's 3/4-24... especially given the 5/8 clearly doesn't fit on it...