Don't forget the H&K VP70-M. Three round burst, and it was the first polymer framed pistol ever made. Most people think it was the Glock 17, but the VP70 was out over 10 years earlier. People are asking why have a burst pistol in the first place if it's PDW sized with all the attatchements.... Well, with the attatchments off and on single shot, it functions just like a standard service pistol and can be carried concealed. Not so much with an MP5K. You can also carry the attatchments seperately (i.e. jacket pocket) and not be noticed. When you decide to get crazy, you can toss on the buttstock, put in an extended mag and get to work. Then when you are done, you can slip it off and reholster it in your standard holster and roll out. I'm sure at least somebody else can see value in that. The thing only weighs 28.9oz compared to an MP5KA4 at 4.4 lbs and a PDW at 6.14lbs. These 2 weapons should not even be compared. We are talking about select fire weapons here, so saying that a semi pistol firing single shots can do as much damage..... umm, when you select single shot on a Glock 18, it becomes a Glock 17 for all intents and purposes. You have lost nothing by switching to semi, and gained the ability to go full auto for room clearing. I just don't see the major drawback. Of course MP5s are great weapons, but we are talking pistols here.