I have an unfired ddm4a1 upper. It came with the ris ii and I had adco switch it out for the geissele urgi nsn marked rail then had a dead air keymo flash hider pinned for 16 oal. It is unfired and only about 6 month old. Comes with the unfired daniel defense bcg and daniel defense grip n rip charging handle. $1000 paypal shipped.