I have a brand new PSA 16" upper M4 profile barrel, New PSA stripped lower, Cmmg LPK, PSA milspec buffer tube assembly , Magpul STR stock, Magpul enhanced trigger guard. The BCG has not shipped yet. What I would like is a Mcmillan A5, A4, or a Manners T4a stock . Short action only, DBM is a...