I have a 20" complete flat-top upper and a complete lower (sans stock assembly). I need A stock. Got one, but I still might be willing to spring for a Magpul UBR or one thats like the LMT SOPMOD stock, used or new Railed hanguards Mags Got what I need for mags, but will always consider some PMAGs Bipod. If it can attach to the rails, great. Otherwise I'll try to pick up a rail/bipod adapter. I'd really like something that's quick to attach/detach Ammo Nice trigger Nice grip Anything else you think I might need!