First off this is a great site and everyone has been super friendly so, i am going to ask for advice from those who know you guys.... I need a all around good battle rifle /hunting rifle gun must do double duty, so it must be light as possible and must be versatile, can take a scope and have open sights as back up . I guess i want to build/ buy a 308 AR 10 carbine or a weapon of that class i love my M4 built by myself i have somewhat but limited skills on building a rifle i would say i am a total newb when it comes to 308 AR platform so I want a carbine, light as possible accurate as possible, and must have front and real open sights... so should I attempt to build and what would said rifle cost to build(ballpark) or should i just buy a AR 10 carbine and if so which platform new or old . I understand the difference between the A's and B's and really it does not matter to me as i will have enough of either magazines whichever i get so in closing I need some sound advice... the cost of buying a complete rifle is very appealing yet I know you can always build alot better but i am not sure i need that much better than a factory rifle for my needs... thanks much Mike