Any trigger with a light weight trigger pull (around 3#) will work.
I have reground Tapco G2s to make them bump, it works good ....sometimes too good.
I was at a public range when I let off a string, the officer thought it was full auto.
It was only about half a mag full, but it wasn't no time the officer was tapping me on the shoulder wanting to see my papers.
If everyone is thinking alike, then somebody isn't thinking. George S. Patton