This is a Uncle Mike's Shoulder Holster known as the Horizontal, model 8715-0.
The Pro-Pak Cross Harness Horizontal Shoulder holster provides efficient weight distribution and a variety of comfort features. These ambidextrous holsters have four way adjustment" smooth nylon construction and waterproof foam padding to repel body moisture.
Features:
Removable onside tie downs
Strap Trapsâ„¢ thumb break and retention strap
Size 15
Fits 3 3/4 – 4 1/2 barrel large autos
