Truglo Starbrite Deluxe Fiber Optic Sight 2.6mm Green

Threads were perfect for the 391, except that as in all threaded items, when straight, it is not at it's tightest point. Loctite was used to keep it parallel.

The .3mm sight fit the Balikli Stranger T15 single shot .410. So would presume many others are the same. Just sharing info! Plus good sight.

Broke within 5 minutes of receiving the product. It does not take much to sheer this off. Very minimal force was applied to do this but would not sit flush otherwise.

Low profile sight. I wanted to try shooting with a smaller dot as I have heard that focusing on the fiber optic sight instead of the bird can cause you to miss. This season I am going to try a smaller bead to see if I end up shooting any better. This bead is about half the size of my factory bead. I did have some issues with mounting. The screw bottomed out sideways in the screw hole for the bead. I used thread locker on the sight about a quarter turn from bottomed.

It fits the affinity while director placement for the factory, one that I had that got damaged during duck season. A dab of purple lock tight and it's solid on the vent rail