I purchased a 30 round polymer magazine for my SKS rifle several years ago, when they were talking about banning high capacity magazines. I heard if I got the mag installed on my rifle before a certain date, I would be grandfathered in and my gun would still be legal. I installed the mag, fired the rifle a few time and put it away. I now have a renewed interest in shooting and dug out my old rifle and was cleaning it up. I recall I had a small, round, plastic object that allowed me to pull the spring on the magazine down so bullets would load easier. I cannot find this device and trying to push more than 10 rounds is almost impossible without it. Does anyone know the exact name of this device and if I can order it separately?