Originally Posted by LyquidFyre
That's rather odd as my old KJW worked perfectly with TM mags. However, it was so old that it had a fixed hop instead of an adjustable one.
My KJW is a recent model bought just over a year ago. I bought a TM M9 mag to try out, hoping to replace the chronically leaky KJW mags. No go. Had someone else lend me a TM mag to try out, and it doesn't work either. The TM mag is about 1.5mm shorter than the KJW mag. It will lock into the gun, but firing doesn't activate the valve. Now, I've been told that the TM extended mags DO work in a KJW though. I've not tested this myself.