Hey, look!

The big difference between the regular Defender 856 and the T.O.R.O. variant is the two large, threaded holes milled in the sight channel on the topstrap, and the contents of a little plastic bag included in the cardboard box from Taurus.

The contents of the bag include an optics mounting plate, a pair of screws to secure it to the topstrap of the revolver and replacement screws to attach a Holosun 507k optic to the plate, since the Holosun factory screws are an incorrect length for the plate.

The entirety of the review is at the link.

.