While I was shooting my 9 mm ECO on the range today, I had not one, but two magazine failures. In both cases, it appears that the welds holding the bottom plate failed and the bottom simply dropped out of the mag, taking springs, parts and cartridges with it. Since both magazines came with the weapon, I am wondering if Checkmate had any bad batches of magazines. I bought the gun new about three months ago and have fired between 1000-1500 rounds through it. The gun itself has been flawless, the only FTF was today when the bottom dropped out and the next round did not load properly (fairly obvious). I own five Dan Wessons (PM-9, ECO, Guardian (both in 9 mm) and models15-2V and 744VH revolvers), and all have been great; in fact I will go so far as to say that they are my favorite weapons. My biggest concern is that I had been using the ECO as my carry weapon (glad this happened on the range) and all of the rest of my mags are full sized and tend to snag my clothing when used with the ECO. Don't really want to experience this another time.