The Strike Industries Glock Rail. Replaces the striker retainer plate on the Glock and is secured further by set screws in the rail. Also has an optional slide racker.
I swear I had this idea, about 6 months ago. Right down to the slide racker. Except the rail didn’t ride atop the slide, but behind it so that an optic would be at about the same height as the iron sights (it also allowed for co-witnessing).
Should I start wearing a tin-foil hat?
Foil is in a drawer in the kitchen island