Whoa! Now that's as deadly as a chemically propelled firearm. That's the kind of airgun I'd say "you need a PAL for that!" Do you do much hunting? What size game can you legally (and possibly) go for with a 30 cal. airgun? One more question actually, how loud is it? Just out of interest, is it any louder then a subsonic round being fired from a .22? I've never even heard of a subsonic .30 cal round! Mods like this are super cool. They are like the stuff of "secret agents" and "covert operators" right out of "the movies." Awesome to see! Totally awesome.