Thanks for the replies everyone!
Lapidary - Did not know about Hilltop. Will check them out....although RRA lowers can be more expensive than others for reasons I don't know. Don't get me wrong.....I have no problem with RRA quality. Every experience I have had with their products has been excellent.
CAESAR15 - I have read good things about M&M and I have been meaning to stop in. $10 transfer fee is excellent....and I might just end up buying other stuff from them as well......
Ameshawki - The rifle works fine as is. New Frontier Arms lower with stock polymer trigger and a commercial M4 stock. The upper is a RRA CAR AR with the flip up front sight. The biggest thing that I don't like about the NFA lower is how it feels when I run my fingers across it to take it off of safety, to close the bolt, or to eject the magazine. I also don't care for the sound and feel of inserting/removing a magazine. Honestly, it's just me being picky and nothing against the product. If this were attached to a .22LR upper I would probably keep it as is. But since the building bug has hit me (am in the process of building an A2 style.....Anderson MFG lower completed......just waiting on the upper), I just wanted to replace the NFA lower and make this one a QCB type weapon. And then I'll have the NFA lower to build into a .22LR build. BRD has me again!!
Ford_shooter - does Farros Lead Farm in Low Moor have a store that I can stop in or do I need an appointment? Due to how my schedule works, I tend to stop in places as I pass by (or work it into where I might be....).
Shack357 - Mason City......I haven't been in that area for several years. But if I have to make a trip up to MN I will include that as a stop. I have customers on the other side of the border (plus a new guy that could use training)....so that is a distinctive possibility!
Sorry for the all in one response.....but life got involved and the thread grew! Any other thoughts would be much appreciated!
Thanks again!!