Originally Posted By JohnStoner:
This question is best answered by silencerresearch.com. $30 for a year subscription and it has in depth testing and comparison when it comes to reduction, weight, size, blow back, internal volume etc etc etc etc etc.
Based on my own personal preferences of characteristics for a suppressor, one company seems to stand out and win in regards to my own preferences for minimal POI shift, sound suppression, price, etc.
It's totally worth the money to pay for the third party independent reviews from Silencer Research, since there are a lot of feuds and drama in the suppressor industry. I'm not a fan of drama, i just want the best product.
ETA: Silencer Research doesn't have Surefire cans. The only side by side comparo with scientific equipment i've seen is on AAC's website. Obviously, some will take issue with the fact AAC conducted these tests but until some other third party steps up to the plate, this is preferred to people's subjective statements. The AAC 416 is the same as the M4-2K IIRC