I used this last Sunday as a sidearm to my G36C rifle, and with all honesty, this pistol can hold it's own with a few extra mags. It's accurate and fires fairly fast, I was able to shoot a group of 3 people before they even returned fire. The only problem I saw with this pistol was that it would be nice if the magazine capacity was larger. I blew through the ammo a little too fast, forcing me to return to using my rifle. I feel like having two of these babies on hand with some extra mags can fully replace a rifle in CQB any day. Just imagine adding attachments too? Yeeeeesssssss.