While waiting for the INGO lowers to come in, I'm trying to find all of the other parts. I've got all the requisite lower parts enroute. Where can I find good deals on upper parts? I'm not 100% on building the upper or looking for a complete upper at this point. I'm just shopping around. I know about PSA, Midway USA, Brownell's. Just wondering where are other places I should look? Online or brick and mortar if it's close to Fort Wayne, Indy, or Columbus areas. I appreciate any input you seasoned builders could give me. Thanks!