For Sale: New In Box Bear Creek Arsenal BC-9 9mm Side Charging Complete Upper Assembly, 7.5" Black Nitride Heavy Barrel, 1:10 Twist, Blockback, 5.3" M-LOK Rail. Includes the BCG and an adapter to use 32 round Colt style 9mm magazines if the upper is used on an AR15 lower.  The upper can also be used on an AR9 lower that takes Glock magazines.  If you look this upper up you will see I paid over $200 but for some reason I purchased more than 1 and I can only shoot one at a time!  I'm asking $100 OBO (Or Best Offer) and I am willing to ship if you pay the shipping.