Looking to build a PCC with a trilug barrel for a Rugged Obsidian. In lead We Trust offers a couple short barrels for different weapons with trilug but reviews are mixed. Anybody here have any experience with them? Looking to tuck a 3" trilug barrel inside a handguard on a Scorpion or maybe a PTR MP5 clone. The quality of the ILWT barrel will push it one way or the other.