FX Utah Airguns tuning option question

When I am purchasing airgus, say M4 from Utah Airguns, there is Tuning options, say $50 for light slugs and $100 for heavy slugs, anyone knows what that tuning includs? Different liner? and tune or just a tune, what do I get for that money?
Thank you
I would just call Utah , seems like the best thing to do .
 
Actually shocked they will touch anything for 50 bucks. I’m guessing that is a super basic velocity set and not a super in depth tune. Probably barely tweaking it out of the box. The 100 dollar one I’m guessing a little more involved to get the speed up on heavy slugs. I would suspect neither is probably as deep a dive as should really be given.
 
Years ago I paid for it just out of curiosity. I wanted to see what their idea of a good slug tune was versus what I would find. With the same slug I was pretty far away from where they had it set. But on their behalf, I don’t live down the road from them in Utah. I’m the whole way across the country. But on the positive side, I truly knew my gun was at least function tested.
 
Years ago I paid for it just out of curiosity. I wanted to see what their idea of a good slug tune was versus what I would find. With the same slug I was pretty far away from where they had it set. But on their behalf, I don’t live down the road from them in Utah. I’m the whole way across the country. But on the positive side, I truly knew my gun was at least function tested.
It truly is a shame that we as air gunners would need to consider paying extra just to know the brand-new gun functions properly.
That says a great deal about the industry IMO

just my 2 tests
Edward
 
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reason I am asking is I hope for $100 you get heavy slug liner, because how would you tune for heavy slugs with standard liner, that would contradict their own theory. I am not afraid of tuning, but if I get heavy liner for extra $100, nad maybe heavy hammer? WHo knows what you get for that $100
My guess would be a nearly stock gun shooting a heavy slug the best it can. If you do get a heavy liner then we now know the dealer cost is $50 for a liner. Because you still need the $50 tune. Go for it. You’re already dropping $2,200 for a toy. What’s another $100. Then you can give some first hand advice when this question pops up again because with the gun you’re buying, you’re not going anywhere.
 
well, they are not "giving me" new liner, they are taking lined that is on the gun and swapping, I am pretty sure all liners about same cost to make, so they can use liner from my gun for another build or just sell it as new, its cost of swap plus quick tune? is hammer also swapped, I am afraid of calling them and they promising me a world just to get that sale going and in reality it's not all, that I can just do it myself...
 
Hard to say if the hammer will be changed. That all depends on the projectile you are having them tune for. If it’s super heavy for the caliber it might need to be changed to a heavier one. The caution on that is if you ever want to shoot light projectiles or pellets you may never be able to achieve a good tune with those without swapping back to the lighter hammer. I just avoid all that keeping my airguns in their lane. No big power mods, just shoot within stock capabilities.