I have a new Satern cut rifled barrel

[jurassic]

Another quick update, I called Troy Industries and asked about getting a gas block with an undersized or undrilled port hole.
He's going to see if it's possible to pull one. I'll let you know.

[Spartan14]

Micro moa mini govanah covers what you want.

[jurassic]

I do not see that they make a .875 version on their web site.