Skeetlee,
Master oxy-acetylene gas welding/brazing during night classes in welding 101 & TIG welding will be much easier.
If, you can't gas weld, hire a professional.
Once you operate a Smith's oxy-acetylene torch you'll never touch a Victor torch again.
CK-Connely Kleppin torches SUCK by inducing too much heat back into the operator through the handle material.
For firearms work a 150-180 amp inverter DC/CC unit w/ high frequency start instead of lift arc/scratch start is your best option.
The #9 air cooled or #20 water cooled torch is your best option for torch manipulation.
The larger #17 air cooled or #18 water cooled torch will induce more heat into the operator & are more cumbersome.
A foot control pedal works best for bench work where hand controls work better for remote work.
US made Miller equipment will cost you more than Chinese junk,but Miller will stand behind their product for as long as you own it.
Weldcraft Torches now merged w/ Miller is your best option for a TIG torch.