I use the Acog on the intervention, and it is fun. Have found that it is easier to get headshots with normal scope though. Was tearing it up yesterday with the silenced intervention in hardcore s&d on Favela.
Got like 4 kills in a 10 second time frame one game last night. Heart was beating like crazy just cause it only took 4 shots total. Didn't miss once, and 2 were headshots. Felt like a beast.