What is a Tactical Force M4 really?
 

I have this Tactical Force M4 and I am trying to find out the original manufacturer. I found a couple of clues in the mechbox: XYT gears and a mostly plastic piston with a single metal tooth at the front. So who makes this gun?

Looks like Umarex rebrands them in which case there's a list of brands they rebrand from what they are I don't remember off hand but I think JG, KWA, and ARES or some of them but they also have "crappier" rebrands under their name as well.... Which I believe the "TF4" to be under that category.

I've owned one years ago it's a rebrand of the Well M4 horrible horrible gun.

The only thing wrong with it after 2 years of gaming is the chepo charger killed the battery. I guess I got lucky with a non-lemon.

The M4 is (or at least WAS) made by Well. The only one I've ever seen a few years back had both Tactical Force TF4 and Well R-17 markings on it.