Smithgall's in Lancaster city just recently became an Aero Precision Dealer. They are selling the Aero X-15 stripped lower receivers for $58+tax, no transfer fee! I stopped in and bought 3 this week, Allison said they have about 50 more in stock. Pretty much impossible to beat that price. They also have AR-10 lowers for $115+tax.

I don't think they have a website, you can find more info on their Facebook page, which I've linked below. You have to click on individual pictures in posts to see prices, usually. And not all pics have prices, you have to message or call for more info.

If you call to ask any questions, ask to speak to Allison, she handles the gun stuff. (If you don't know, Smithgall's is a pharmacy, they just happen to have a massive stash of guns in the back room(s). And some of the best prices!)

Fyi, I believe private transfers are $20 there. Whether person to person or if you're having it shipped in.

https://www.facebook.com/smithgallsguns/