@TheExceedWell it is possible, but it would require a lot of rewriting of the block code to define custom gathering groups for different weapons and I think that for the time spent making that it's just not worth the effort. I did that with all the ingame trees and boy that was painful to do
@Blazer777
If you are reffering to lag spikes in the inventory while crafting, everyone has them, be patient and lets hope A17 will fix them, if not in inventory, you should consider upgrading your computer if possible.
@fclen
You have to have the gas tank in the inventory and use a Wrench to upgrade it. Make sure you have taken out all the tools and stuff from output, because you will loose them.