I handmade mine out of 7075 billet Aluminum.
Hard work it was and mega light they were as well. I posted them before, but I don't remember which page going back.
The trick with them is to make sure the striker teeth are in the right orientation so as to grab the door rooster wheel correctly and lock.

IIRC, both DVW and his Son got to see and hold 'em. We were all laughing.