"Happiness is a belt-fed weapon"
I couldn't have said it better myself. If you ever get the urge to see some real "full-auto fun" venture out to Knob Creek Range (KY) during their (twice annual) machine gun shoot. It's amazing (it's where the other guys with the SAW's hang out) everything from M2s (literally dozens of them) to an original gatling gun to a couple of mini-guns (6000 rounds a minute with tracers at night is *awesome*). They also rent their guns. If you just cant live without ever shooting a quad fifty on a half track mount you can do it here. I splurged and shot an M82 (fifty cal sniper rifle), the brake on that thing flattens everything in a 50 ft radius. Nice.
The "grease gun" is cool, but their popularity lately has driven the price to almost $1000 (in semi) and thats a lot of money for a stamped gun. I do like tha caliber though
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One of the guys I shoot with has a couple of squirt guns and last time out he brought his uzi and suppressed Mac 10. I had a couple hundred rounds I had brought with me and I spent some time with the Mac. It was a good time, we got to see the effectiveness of the 9mm v the .45. No comparison. We were shooting at an old contractors van and the .45 would penetrate both sides of the van (including interior shelving) and the 9 would poke a hole in the first side and drop. Of course the Mac gives new meaning to the concept of "spray and pray". I however use the theory of "place muzzle firmly against target and squeeze trigger. Repeat as necessary".
Pete