Got my 10.3 mk18 clone upper low rnd count less than 200rnds on it went to a shorter barrel on my new setup my loss if your gain comes with a Tanodized True North Concepts 1913 rail mounted Gripstop + 3 LWRC 1913 Rail Panels 1350 obo or trade for another 9”-5.5” inch gucci upper or feartomorrow crowned lower and upper or rail thank you