Ok, first so you understand.
I run a company that makes lots of advanced firearms stuff.
Scopemounts, grenadelauncher sights, upgrade kits for G36, HK417 etc.
you can see the company here:
www.spuhr.com
That company takes all my time and therefor I am not interested to sell my by the hours.
All my work done today is not done by the hour, but instead a development of new products.
So I do simply not have the time to make oneoff projects like this for customers.
If I should make a batch of 10-20 reartoggles like this one they would likely end up costing some 2000 USD each, and the making of single pieces is almost impossible.
2000 dollars are in my opinion a very high price.
Adjusting luger triggerpulls aint difficult, not at all.
But it's required that the gunsmith have a Tig welder and a toolgrinding machine or worst case scenario a milling machine.
I have no secrets so if someone wanna do it, just ask and I tell you how it's done.