Re: RRA Question
It is a very simple process. For about 75 bucks, you can get your reciever blocks. If you go to brownells website, you can watch there videos to work on AR's. They show a step by step. Very Simple. And there is many rails you can put on. Each tube will come with its own barrel nut. Just take off the gas block and tube, unbolt the tube and barrel nut, put on the new one, tork it down to 35-40 as long as you can see evenly through the keyhole for the gas tube in the upper reciever, then install tube or rail.