Yessir- That one there was untouched, the second of my two Optimas. The firing pin is a little longer than the other one, and needs to be shortened a bit before use, I think. I slotted that bit and shimmed the bushing with a 1/4" rubber band behind the original o-ring. My other Optima just needed a 1/16" thick o-ring to make it flush.

This bit works great and pulls that bushing down snug. It'll be nice to have on hand.