Who makes aftermarket magazines with no logo on them in blue,15 rounders and ammo count in the back of the magazine 5-10-15? Oh, and also there is a streak of weld in the back of the magazine right in the middle. Been looking at it carefully and a mec gar sure looks like it could be a mec gar magazine. Bought it at gun broker for ten dollars used of course. Fires fine and fits just like my mec gars don't know. Would appreciate some input in this. Thanks in advance.