I was digging through some of my old airsoft stuff getting ready to sell some of it and stumbled across an old MP5 that had 2 screw on picatinny rails. They look just a tad bit longer than the ones that ATI makes for their stock, and don't have the little riser piece underneath. Do you guys thing they would still work anyway? Here's the ATI ones from CTD. Here are some pics of the ones I found. What do you guys think? Also, if anybody that has the rails could get me a measurement on how much space is between the screw holes on those I'd appreciate it, just in case these don't work I don't wanna have a gaping hole in my stock. Thanks as always!