The T. Rex Arms Ragnarok Holster is a extremely adaptable, tough, modern, and fast OWB holster family, which includes a wide range of magazine carriers. The heart of the Ragnarok system the modular hole and slot pattern on the back that allows the holsters and carriers to be mounted using a variety of attachment hardware.
This file repository contains a number of vector formats depicting the two mounting patterns, and a PDF file detailing its measurements. This is an excellent starting point for anyone wanting to support a wide array of attachment hardware for holster, tool carriers, and more. These files are licensed under the MIT license, and can be used for design, manufacture, and commmercial production.
This distinctive T-shaped mounting pattern accommodates a variety of mounting options from Safariland, G-Code, Blackhawk, Blade-Tech, S&S Precision, and more. It can be used for competition/range/duty use with paddles, offset mounts, or leg rig. It is milled with a 0.25" bit.
The smaller carrier mounting pattern is best used with the ELS or TEK-LOK attachments. What it lacks in wider attachment support it more than makes up for in mounting flexibility. Attachments can be rotated 360° in any direction in 15° increments, and adjusted higher or lower on the belt. It is milled with a 0.2" bit.