Hear me out guys- my 12 yo son has a 15-22 that has been simply flawless. He wants me to get one for myself so we can have some competition. He has a PA Red Dot and bipod. I can get the standard 15-22 for a lot less than the FDE version but by the time I add stuff I'm likely in the FDE price range. To make it look different I was thinking about the standard version and just adding a FDE or OD grip and bipod (or forend grip). Do the magpul grips just slide over the current grip? I'm assuming a forend post just mounts to the front rail? Sorry guys- I'm not an AR guy so this is new to me. I can use the $ to buy a red dot. What say the experts here?