I need a new m4 for a spec ops loadout. I am trying to do a delta/green beret loadout and i need a solid gun with good internals already and a RIS because i cant change internals... i have no idea what im doing when it come to the internals but externals are my thing. It needs to be solid and have good internals like I already said. Also, please DO NOT give me a gun that comes with a bunch of good externals like the MOE PTS carbines for example. I just want a STANTAG mag gun (preferably m4 but maybe hk 416 or sr12 or something). I dont have a dmr role so please no super long barrels. Please post a link along with the gun suggestion. Thanks for the help!!!