Eaglehorn I saw all of that stuff you were selling and even bought a little. Still I was wondering if you were OK as there was so much of it. Good to hear you had a purpose and it has werqed out for you. You'll love the Impact.
I have a couple three strange builds that just keep growing as airgun tech matures and more parts become available. I went to edit the long post, update a picture, I did on the Blue gun a few months back and the post with all of it's replies completely disappeared from the forum never to be seen again.
Anyway here is my strangest build I expect some are getting tired of seeing it by now. It started out a lowly Crosman 2240
I added a DAQ steel breech, a 2250 barrel and cut a new trigger out of a piece of aluminum angle. Enlarged the port on the valve, eased the angle, increased the volume and modded the stem for better flow as well.
Some months later I decided to bulk it and found a dropforward at an online paintball store and a fake co2 cart at Mac1 which I drilled for the macroline and ported for more flow. Made a better moderator from carbon fiber for it few months after that. Then I just shot it and shot it and... for fifteen years. Half inch groups at 50 yards were the norm. But I could not get over 630fps with my Crosman 2250 barrel or accuracy suffered greatly.
Then the aftermarket repeating breeches I was interested in began showing up on the net. I bought several of the breeches, a BNM, custom Air and an Exclusive and tried them out settling on Custom Air repeating breech for the smoothness of it's side-lever action loading. While I was at it I decided to put an FX stx barrel on it. So I cut off a barrel and made an adapter for the breech. The breech was high enough for me to add a shroud so I made a few parts and put on an overly long shroud which I shortened shortly after. It's still a bit long but it makes the gun nice and quiet so it's all good. It still shoots the half inch groups but velocity goes to 730+fps
https://www.airgunnation.com/topic/what-a-difference-in-group-size-one-turn-on-the-hammer-spring-adjuster-makes/ Exclusive breech above Custom Air below