Currently I have a stock Bushmaster AR-15 like this. I'm looking to add a rail system so I can put an eotech, fore grip, and flash light. I want to go tactical with this gun. Any suggestions regarding what rail, fore grip, and flashlight to get? My budget for everything is about $1,000 and I figure the eotech will set me back about $500. I would also like to try and keep it as light weight as possible for the stuff I'll be putting on.