The HK45 was a candidate in the U.S. Military Joint Combat Pistol program representing Heckler & Koch, unfortunately the program was closed down and the poor gun could not manage to enter the military. H&K then turned to the police and civilian market for it. The gun is a .45 ACP pistol derived from the USP, with the most significant improvement on the grip, making it sit lower in the hand. It also features a M1911 style safety.

Everyone has been heavily anticipating the arrival of the Tokyo Marui Model 45 and now it has finally arrived. What can we expect from it? Well, first thing's first, it's made out of plastic. Now that we've gotten all the boos out of the way, we can get to the cool stuff.
This model is very user friendly. Everything about it screams "we didn't forget about the lefties" as it has an ambidextrous magazine release and slide lock and release. The decocker is currently found on the left side but it can be placed on the right. At the front is a picatinny rail where you can add a flashlight or laser.
Performance wise, it's rather snappy. It would be because of its plastic frame but don't let that put you off. On top gas, it can shoot as well as most GBBs these days and since it's a TM, you know it'll be accurate