Wildcat gen1 barrel

I’d be interested to know if it’d be possible to swap out my drinking straw (STX) for a gen 1 since I keep asking about a “superior” in .177 &.......
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I would have a custom poly LW barrel made to drop in fit and have the retaining collar and TP machined right in if I went through all the grief and wasted time and ammo you been through.