If you point this thing at someone I would guarantee automatic compliance. You would be hard pressed to find a duty holster for this big of a gun but I'd still love to have one…

Let me get a towel to clean all the drool from my chin and desk. I want one of these now! But a thousand dollars! Unfortunately my department won't let me carry anything larger than a 40 cal and it looks like it be too big for concealed carry off duty

What is there to say? It is an HK, no compromise. This is a picture of the prototype from 2003.use this link address to see more. http://world.guns.ru/handguns/hg141-e.htm .
Type: Double Action
Calibers: 4.6x30mm
Weight unloaded: 850 g
Length: 200 mm
Barrel length: 130 mm
Capacity: 20 rounds

The Ultimate Combat Pistol (UCP) is the most recent development of famous German company Heckler und Koch. The development of UCP has been started on request from Bundeswehr (German Armed forces) in 2002 or 2003, and this pistol is intended to become a companion to HK MP7 Personal Defence Weapon, which is also is under serious consideration for Bundeswehr, as well as some counter-terrorism forces in Germany and abroad. This combo (MP7 PDW and UCP pistol) apparently will become a major rival to already famous Belgian FN P90 PDW and Five-seveN pistol.

Like the Five-seveN pistol, the UCP is intended to provide accurate pistol fire, with high armor piercing capabilities, high accuracy, large magazine capacity and low recoil. To achieve those requirements, UCP uses special small-caliber, 4.6 millimeter ammunition, initially developed for HK MP7 weapon. This ammunition has a bottlenecked cartridge case and a pointed bullet with steel core, with relatively high velocity. The only questionable property of this ammunition is its stopping power, as the bullet is very small and thus could make any serious damage only if it will tumble or fragment on impact with human body.

So far not too much information is available on UCP. At the present time (November 2004) HK and Bundeswehr apparently started initial trials of the pistol, and more information probably will become available next year.

The UCP is a semi-automatic pistol with detachable magazine and polymer frame. Current prototypes feature a HK P2000-type grip with detachable backstraps of different size and configurations, and a Picatinny-type accessory rail under the barrel. The action of the gun is said to use some sort of retarded (or delayed) blowback system, but so far it is not known, if it is a roller-delayed blowback, as in HK P9s pistol, or a gas-delayed blowback, as in HK P7 pistol. The trigger unit in current UCP models is modular, and could be had in various configurations (DA/SA or DAO), with or without manual safeties. Standard magazine capacity is 20 rounds, and it is believed that the UCP will accept both 20- and 40-round magazines from HK MP7 PDW weapon.

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dont't know about this one, im not a big fan of glock knock offs, i recently traded my springfield 1911 champion in for a springfiel xd 45, was not impressed, so i looked around n settled for a glock 33 chambered in .357 sig awsome round, but i will stay faithful to my revolvers, my 1st handgun was a .38 special service pistol 4" barrel n i wouldnt trade it for the world, guess it all depends on preference, but in another words, im not a big fan off all these new hi-tec weapons, i like glocks but i prefer my weapon steel not abs or plastic, so i don't know if id consider this weapon

A good gun, but really bad round. If you think a 9mm doenst have stopping power, wait until you shoot this one. The small and fast bullet will penetrate most forms of body armor, but your only drilling small holes. Id rather shoot someone with a 9mm, that this little bullet. To small of a bullet to be very useful.

I don't own it but for the sound and looks of it, I like it. I like to collect new rare and good looking guns, and this one seem to be on top of my list to buy next. I always said the should come out with a hand gun using rifles rounds, of it sudden five-seven came out and now this one. I didn't like the five-seven, but I love the looks and sound of this one. I own ten handguns three rifles and two shootguns. The last one bought was a chrome .44 desert eagle 6", and cost me about $1,300.00 plus tax. So for the looks of it I am not buying this one untill like August, all this guns going to make me poor but I definite would buy this one as soon as I can.

It seems to be a good weapon.