I am guessing what he is saying is that ARs in a huge list of OTHER calibers is where the fun really is. Actually I agree with that.
In my world, I would trade any AR I have (in .223/5.56) for an AK... or a PSA KS47.
5.56/223 is an obnoxious noisy piss ant of a round.
DO NOT build an AR in 7.62 x 39... you will always contend with feed drama (EVEN with the best mags)... get a PSA KS47 instead.
Regardless... jump right in on your build of an AR-15. Don't let other complicate that.
