The DP51 is a 9x19mm Para. handgun used by the South Korean military. It was originally used by South Korean officers in the military. It feeds from a double-stack magazine that holds thirteen rounds of ammunition. The pistol can also use Smith & Wesson 5906 magazines, but they will not fit as snug (and the Daewoo mags cannot fit in a S&W). This pistol is a 9mm, yes, but there's no plastic on it whatsoever, save the grips. These pistols are very reliable and easy to maintain. The accuracy I am unsure of, however, as the one in this review is not too accurate, though I have seen others that were. I do not know if that was just because ours had been fired quite often (slightly worn barrel rifling) or if they are hit-and-miss when it comes to purchasing a quality model.
The pistol is a triple-action pistol. This is the only handgun in the world that uses this style of operation. What this feature does is give you a double-action pistol with a single-action pull. You have the regular single action operation where the hammer is pre-cocked and, when the trigger is pulled, the hammer makes one single movement (down). This is the most accurate way to shoot as there is only one action taking place and there is less weight required to pull the trigger rearward. This handgun also has the standard double-action; when the trigger is pulled, the hammer goes backwards and then back forwards to fire. This requires a much heavier trigger pull, however, and makes accurate shots very difficult. What is triple action, however? It's very interesting. After you rack the slide to chamber a round, the hammer is automatically put into single-action mode. With this pistol, you can push the hammer back forward with your thumb. This puts the hammer forward as though it were in double-action mode but it retains the light trigger pull required of single-action. The only use this would have that I could find is if you had a holster that required it to have the hammer down to fit in. This would let you still fire in single-action (more or less) whereas other handguns would require the less-accurate double-action operation on the first shot. As you may have noticed from the photographs, this pistol features an ambidextrous safety. Unless you can disassemble the pistol and reverse it, however, I believe the magazine release is still right-handed.
Also notable with this pistol, the weight of the handgun is decent at controlling muzzle climb. You could cover a man-sized target with thirteen rounds within a couple seconds. The previous ammunition we used (cannot remember the grain) was not accurate in the handgun at all. We've found that 124gr. American Eagle FMJ works best in this particular handgun, however. One can maintain man-sized groups at 25-30 yards with that ammunition (and some practice) whereas the previous ammunition used was limited to around five yards.