Help with my toggle catch?

[mrerick]

I think that the shape of the little hook that goes over the pin that holds the hold open in place is the likely root of this problem.

As your receiver slides back, there is nothing to prevent it from dragging the hold open rearwards with it.

The new ones I showed in my earlier post have enough of a hook to fit around the retention pin and prevent that movement. This area on your hold open looks flat.

Marc