Suppressor with 6.5 Grendel

[kansas]

... I was wondering if I should ask them to ship it without the brake installed ...

When buying an upper, I always ask for the muzzle devices to be removed and to have the threads wrapped in a "KAC thread protector" (some electrical tape). But now that you mention it, maybe 2 years ago, I called Larue and asked if I could buy a rifle and have them remove the muzzle device and they said NO. So glad to see they are a little more flexible now.
Factory installed muzzle devices can be a *itch to get off.