I’m doing my first AR pistol build. I think build isn’t really the accurate term as I’m just buying the upper & lower ready to go then adding a KAK Shockwave. This is the Upper : http://palmettostatearmory.com/psa-10-5-...-516446429.html : Could someone recommended a lower that is just ready to go, plug & play for the upper listed above ? Palmetto’s offering http://palmettostatearmory.com/psa-ar-15...azine-7065.html : Looks fine but I cant use the furniture. Thanks