Just did this lightweight class carbine build. Purpose built for Revere's Riders style classes. Lothar Walther barrel, mid gas, lwrc buis, simple effective rifle with a 15" handguard. Weighs around 6 lbs. Kind of refreshing to put something so simple together.
I love how clean that build is. And the hint of blue in the Magpul grey is awesome, looks like a battleship.