Anyone here have experience with these? I've only been into the AR game for a little bit and have been going with PSA parts mostly on my assembly. LPK seemed like quality stuff. Mil spec buffer tube and I bought a Larue R.A.T stock that I am still waiting to get delivered. I have it all together and fit/finish seem nice. Pins lock right into place with no play and trigger pull seems nice. I couldn't pass up the total price of 130ish. I originally had my PSA upper on a ATI "multi-caliber" and it worked fine, just not sure if I trust polymer yet, even with metal embedded... so i just put the Chiappa M4-22 dedicated upper back on that. I know it really doesn't matter since I already bought it, but I guess I'm hoping no one has had horror stories about the Anderson lowers and make me regret just buying it!! I just figured for the same price as a polymer I could get aluminum it was a win. On another note, ClassicFirearms (just got an email) has a Omega -15 Complete AR-15 Black Polymer Lower Receiver by E3 Arms for $129.00, completely assembled. How many different polymer receivers are out there? I never even saw these during my receiver shopping, just New Frontiers and ATI mostly.