Warcomp install

[Knuckledragger]

I’m currently mocking up my M5 (now M5E1) build, and while dummying up the muzzle device for correct clocking, I realized the spacer and shims are about .060” oversized. Instructions with the Warcomp show using internal shims instead of the supplied external+spacer.
   Anyone else come across this, and does anyone know the correct shims to use internally?
 

Attaching pics to show how the spacer fits about as well as a hula hoop on a drinking straw. 

[Ravenworks]

Mine were never that sloppy, who's the barrel from?

I haven't had to use the spacer either.

Edited June 5, 2020 by Ravenworks

[Knuckledragger]

7 minutes ago, Ravenworks said:

Mine were never that sloppy, who's the barrel from?

I haven't had to use the spacer either.

It’s a 20” Ballistics Advantage Heavy Profile.  The Warcomp threads and fits great. Wonder if this is some kind of weird relief cut. 

Edited June 5, 2020 by Knuckledragger
Added info