I have one, it came from Davidson's when they were the original importers. I believe that Kimber picked it up after that along with the Daewoo DH-40. At some later date, EAA imported the Daewoo in the compact version. I will keep mine as another fine example of a 9mm handgun. Daewoo is an awsome producer of firearms. Their DR-100, 200 and 300 long guns are terrific machines.
Daewoo K5 / DP51 pistol is short recoil operated, locked breech weapon. It uses a conventional Browning-type locking system, with two lugs on the barrel engaging cuts inside the slide. Locking and unlocking is controlled by the cam-shaped lug at the bottom of the barrel. Frame of the pistol is made from aluminium alloy; all other parts are made from steel. Trigger is of “triple action” type. This means that other than traditional double or single action fire modes it has “fast action” mode, apparently borrowed from FN’s GP “Fast Action” pistol. In this mode hammer is cocked by the cycle of the slide, then it is pushed forward by the pressure on the hammer head. In this position, the main spring remains cocked, so only light pressure on the trigger is necessary to recock the hammer and fire the gun in the “double action manner”. Or, alternatively, hammer can be recocked manually to be fired in single action for maximum first-shot accuracy. Sights are fixed, with the rear sight dovetailed to the slide.
The DP51 is a semi-automatic pistol in 9mm Parabellum caliber, operating on an unusual delayed blowback system. The interior of the chamber has a number of shallow annular grooves: on firing, the cartidge brass expands, under the high chamber pressure, into these grooves and thus prevents the case from being extracted and the breech from being opened. After the bullet leaves the barrel the pressure drops, the brass contracts to it's normal dimensions, and the breech can then open. Designed for police and military use, the double action trigger is better than most, providing a very even trigger pull.
Manual safety: Ambidextrous levers at both sides of the frame, above and behind grip panels. To set on safe: pull the lever up. To disengage safety: pull the lever down; red dot will appear on the frame.
Field stripping procedure: 1) remove the magazine by pressing the magazine release button 2) check the chamber for remaining cartridge 3) retract the slide until the notch on the left side of the slide will be aligned with the front of the slide stop lever 4) push the slide stop pin from the right side, then pull and withdraw the slide stop completely toward the left 5) ease the slide and barrel assembly forward and out of the frame 6) remove the return spring and barrel from the slide. Assemble in reverse order.
Hope this helps. I am not happy with myself because I do not have a pix of mine to submit and it is too much of a pain to chase it out of the safe and 'shoot' it with the digital.
Ed