Hey guys, new guy here. Had a newbie sort of question. i am an avid shooter and just got my first HK. It is a HK MP5-SD .22 caliber. i found that I want a fore grip on it but not sure if there is a handgaurd i can use to replace the stock round handgaurd. I would like a railed hangaurd or a way to put a rail on the round stock handgaurd. I guess i could just drill couple holes in the stock handgaurd and add a rail, but I want a more professional look. So has anybody dealt, or have any suggestions for me. Thanks a bunch guys.