Oh SHIT YES! I love their AR45 lowers! I just wish they'd make them a little cheaper.
that is why I was there. They are 10% receivers, all you need is a drill press and an end mill to clear out the fire group and drill the selectors and pin holes. I think I'm going to order one of his, it uses grease gun mags - much better than the olympic 45 lowers which use .45 uzi mags, they are expensive and hard to find.