On the M&P 15/22, you don't need a flash supressor or a compensator. Reason, not enough gas to do either. It is a Tacti-COOL look like image thing. Guys, and that's not a bad thing. Looks are important, we all do it, we want a cool looking tactical weapon. Some want more looks, other want performance, I say why not both! With smart shopping and good research, you can get both these days. So make your M&P 15/22 look what ever, just keep it pointed down range and at the zombies if and when they arrive...