I forgot to mention, the CRS 556 has the best flash suppression of any can ive used on 556. This was the most impressive aspect of the can being its only 6.25 inches. We did a night shoot a few weeks ago and had about 10 cans there. We ran them all back to back with 55 grain federal 5.56 and the CRS beat them all. I don't remember every one but we had sandman S with 5.56 flashhider, flow 556k, Velos, YHM turbo t2, RC2, RC3, M42k and a few more.