If you are looking for a basic lower parts build, doesn't get much cheaper than buying new from Black Rifle Depot, their Omega or Alpha lower parts kit. 59.95 using a code 10OFFLBK plus 5.00 shipping. I have one on order so I have not seen the quality yet but the reviews are pretty good for the Omega style. I usually change out the trigger springs to JP or similar, upgrade the grip to Hogue rubber beavertail on any basic build as it is. Could not buy all the parts separate for less.