I don't know if this is enough to make a DMR or not, but I have a 440 dollar budget. I like M4/m16/m4 varriant, and I wasn't sure what base/platform gun I should get, and how much one should pay on one. Also could you type out a list of internal upgrades to buy for the gun within my budget? Is it possible to get a gun in this price range to make a dmr and have the gun have solid externals,(won't break, no wobbles, etc,)? Thanks ahead of time guys I appreciate the help.