Not really, with enough money, you can buy jigs and milling kits that make it as easy for you as possible to complete upper receivers: http://www.cncguns.com/t

Not really, with enough money, you can buy jigs and milling kits that make it as easy for you as possible to complete upper receivers: http://www.cncguns.com/tooling.html http://www.cncguns.com/tooling.html