I'm having trouble deciding what my next AR15's upper should be. After having my CMMG bargain bin for 9 months I've decided I want more of a precision 100-300yd bench shooter instead of a tacticool carbine. As far as the upper goes, I'm torn between the LMT MRP and just a nice upper with DD Lite rails installed. Does anyone know which is lighter? I'll be mounting a good scope and a bipod on it for sure. From what I've read, at 300yds there's no need to put more than a 16" barrel on. Either would be a midlength DI for the sake of parts availability and since I clean my guns after every trip I'm not worried about reliability. I guess I'm worried about the MRP being heavy as fuck as well as being locked into LMT's barrels. What barrel would you all choose? Anyone feel like chiming in and help plan my future build?