Olympic arms is a good choice as are the others mentioned , the question is " what do you want out of your rifle " , plinker , target (varmint huntingtype )or one the mil.spec versions. I have two OA's , one is set up with a 24", S/S HB, 1 in 10" twistbbl. for target and one I am in the process of building and am not sure which wayI want to go with it yet( I've had both for over twenty years( both prebans if that means any thing now a days)There are so many add ons and config. , it boggles the mind now a days . All this stuff was not available when I was custom building them back then . Think of what you want it for and go with that , all the diff. types have limitations as to there particular configuations. As said if you want a 7.62x 39 buy the AK they are still a good deal. I've had a couple of AK's in 223 and they shot pretty good .