Although the price is high, Templar Tactical aka Crux Suppressors has DT models that fit the bill. Their 6" 30cal would work, or even their skinnier cans.

BigWaylon - where are the shrouds available? I looked a while back since us Marylanders have minimum OAL requirements for SBRs. Couldn't find anything.


... what about boring out the Griffin Spartan 3? Seems like the right solution with respect to cost. And can you thread a 30cal barrel in 1/2x28?