Which gas block for suppressor

[montana]

I did see the rifle speed and it intrigued me. I actually saw it in a suppressor demonstration. my 20" has a 17" handguard and my 16" has a 15" handguard. Their compatibility chart doesn't show anything fitting my 16" setup. With they weren't quite so expensive.

Yes, you have to use the proper length hand guard for access to the Rifle Speed as with any adj gas block..