Push down slightly on the tip where the pin holds in the spring. If not you will repeat what I did which when the pin was removed the spring and the plastic lanyard thing flew out. Fortunately my right eye stopped it from traveling more the 3 feet.lol. No joke. My eye hurt for 2 days. The spring seated in my very disorganized garage but found it 10 minutes later 12 feet away. You've been warned.lol
Grips made little difference to me but I use the large. I'm 6'7", big hands.