I have the KJW M1911 tactical and it is an awesome gun. These are the only magazines that are compatible with them but its perfectly fine because they are awesome! They hold 26 rounds and a ton of gas. I was able to clear all 26 rounds and get another 20 or so off before it ran out. They look like M9 mags but that's just because of the size of the grip. There are a couple downside's to these magazines and that is that they are only compatible with the 1911 tac and the Hi-Capa. It is a double stack so its hard to get all the rounds to line up perfectly, but thats not really a big deal. Also mine leaks from time to time. When i first bought it, it worked like a charm but for some reason every now and again it leaks. Overall i would give it a 5/5.
-Holds a lot of rounds.
-Amazing gas usage.
-Fits very well in the gun.
-Fits in all just about all magazine pouches.
-Made very well and feels awesome.
-Its a double stack.
-Only compatible with 2 guns.
-The rounds dont always line up perfectly.
-Mine leaks, although that could have happened during shipping.