Hey guys. I was looking at G3 parts kits and thinking of building my own. I know I need a tig welder as well as a 5 ton shop press to press the barrel into the trunion. I was contemplating for my first build just using a prebent PTR receiver. I know this requires skill and my dad has used a mig welder for a long time so I'm sure a tig is not much different. Is there a guide here somewhere on how to build one of these? Really wanna try it myself but I'm a little nervous.