yes you can swap barrels and have a 300bo. if you want to have two dedicated uppers you could just drop a 300bo right hand on that lower. or find(good luck right now) a LH upper reciever and LH bcg.
stag has recievers in stock 114.00 add a barrel, gas block and tube, your choice of hand guard and then use the BCG you have.
Last edited by deerstalker; 03/06/21.