I've never dealt with muzzle devices before so I'm unsure what I need to look for and I don't just want to leave bare threads hanging out.

I want a thread protector at minimum but would consider a brake

Do I just look for anything listed as 5/8 x 24 or is there another measurement I need? I noticed xcaliber doesn't list a brake that matches this od. Is it normal to use a break or protector of a different ODER?

X-caliber
26"
SS
Heavy Palma .90 @ muzzle
1:8 Twist
Small Shank
5/8x24 Muzzle threads
11 degree target crown