IF YOU DONT FEEL LIKE READING AND/OR ARE JUST A TYPICAL LAZY PERSON, THE POINT TO MY STORY IS AT THE BOTTOM IN BOLD...So I ordered a box of MAG midcaps for my m4, when I recieved them i went directly to test them to see how they fed in my gun. The mags fed perfectly but I could tell they needed to be lubricated and broken in. I recently ran out of my silicone spray so I went to a hardware store to pick some up. The spray I had before was made by some airsoft company and was around $5 for 6oz. I found some "100% silicone spray" in an 8oz can for $7.50 and then some "Heavy duty silicone spray" in a 12oz can for $5.50 at the store. I thought I found a great deal on the "Heavy duty" can and proceded to buy. I rushed home to lube up my mags... after lubing the first one I noticed that it kept jamming and something was wrong, thinking it was just a defective mag I proceded to try another one... it took me 3 to figure out something was wrong. Then I started noticing when I was unloading the mags that the bb's were coming out deformed and almost felt like they were melting, which they were. feeling enraged at this conundrum, I chucked one of the mags across my backyard, striking the wall where it shattered into 2 pieces, the inside of this mag was also deformed, like the bb's were, and slightly melted... neglecting to read the back panel of the spray can before, I decided it would be a good idea now and noticed at the very bottom in tiny letters it read, "contains acetone may harm plastics or painted surfaces." Great, I just destroyed 4 brand new mags... so my point is DON'T USE ANYTHING BUT 100% SILICONE SPRAY TO LUBE MAGS