I use the SCAR-H with the Holo sight, heavy barrel and bi-pod. It's my favorite gun for the Engineer. It's deadly accurate, even at long range. The increased damage and slower ROF is what I like about it. Of course, you're basically screwed in close quarters. The 20(21) magazine size doesn't bother me that much. I once took out three people with 21 bullets. Once you figure out how the gun works, it's awesome.