I have one and I like it alot. There are many downsides though. The flash from the ports can ruin your night vision so it isn't very good in a defensive situation at night. The ports get the exterior and inside of the gun very dirty. The ports also make the front sight VERY dirty. Mine is currently black.... Overkill says that a sight change can cure this and I'll probably do this soon. It is also very loud. You could be injured by the port blast if you shoot with the pistol up against your body.
All of the problems can be solved if you swap in an unported barrel (about $160 I think) but the problems are back when you swap in the ported barrel. I'm still really glad that I bought mine but its not for everyone.
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