I'm looking to build a DMR off of an M14 EBR. I am fully confident in my choice of the M14 EBR so now I'm just curious to see what the more experienced guys have to say on what specific EBR I should get. Black EBR with the standard EBR-style adjustable stock/cheekriser is a requirement. Long-barrel is preferred but that's up for debate as well and which brand and model to buy. I'll be building it up to 550 FPS, semi-only. Assume budget is unlimited.