The Ironside OWB holster is designed around a minimal set of mounting accessories that keep the holster tight to the body and tunable for individual belt widths and cant preferences. Understanding these options — and how they interact with the belt, the pistol’s optic and light configuration, and the broader loadout — is essential to getting the most out of the system.
Belt Loops: Width, Cant, and Material
Every Ironside OWB holster ships with one pair of belt loops installed. These loops are constructed from acetal plastic, an engineering thermoplastic chosen for its dimensional stability, chemical resistance, and long-term durability under repetitive flexing. Acetal will not soften or deform in heat the way some injection-molded polymers can, which matters for a holster loop that spends hours under tension on a belt.
The loops are available in two widths:
- 1.5” — fits most casual and dress belts, as well as many concealment-oriented gun belts.
- 1.75” — fits thicker gun belts and tactical belts like the T.Rex NOVA Belt.
Cant adjustment ranges from −5° to +10°, set by the position of the loop screws relative to the holster body’s 1” hole spacing. A slight forward cant (positive) aids the draw by angling the grip rearward and upward, which is particularly useful for strong-side OWB carry. Neutral cant (0°) is common for appendix-adjacent OWB positioning. Negative cant is rarely preferred but is available for users who find it ergonomically necessary.
Replacement or alternate-width belt loop pairs can be purchased separately, so an Ironside owner who wears different belts for different contexts — a thinner belt for OWB concealment under a jacket versus a stiffer gun belt for range use — does not need a second holster.
The Ironside belt loops are not interchangeable with Sidecar or Ragnarok mounting hardware. Each holster system uses a purpose-built attachment method matched to its retention concept and intended use context.
Belt Compatibility
The Ironside pairs optimally with the T.Rex NOVA Belt and performs well with quality single-layer gun belts from manufacturers like Kore Essentials and Ciguera. The key requirement is a rigid belt with consistent width — floppy dress belts allow the holster to cant and shift unpredictably during the draw.
Critically, the Ironside is not designed for over-the-pants battle belts or thinner two-piece competition belts. For full duty-belt or war-belt use, the appropriate configuration is a Ragnarok on a mid-ride CUBL with QLS and thigh strap, mounted to an Orion Belt. The Ironside fills the gap between concealed IWB carry and a full duty rig — it is an OWB holster for civilian gun belts worn through pants loops, not a belt-mounted tactical platform.
Integration with Plate Carriers and Outer Layers
When wearing body armor, the Ironside can still function if the cummerbund is thin and unloaded. A thick, fully loaded cummerbund will ride over the holster’s belt loops and interfere with the draw. For anyone running a loaded plate carrier in training or field use, the Ragnarok with a dedicated duty mounting solution is the better choice. The Ironside’s strength is that it transitions cleanly between range sessions and OWB concealment under an untucked shirt or jacket — contexts where a plate carrier is either absent or lightly configured.
Optic and Sight Considerations for Holster Fit
OWB holster selection does not happen in isolation from the pistol’s optic and sight setup. The Ironside is molded for specific firearm models, but optic and light compatibility determine whether the holster’s retention and draw profile remain clean.
Pistol Red Dots and Deck Height
The dominant concern is deck height — the distance the optic sits above the slide. Optics in the RMR footprint (Trijicon RMR Type 2, RMR HD, RCR, and Trijicon SRO) all share compatible mounting geometry with existing slide cuts, meaning the Ironside’s optic channel accommodates them without modification. The RCR specifically maintains the same deck height as the standard RMR, so swapping between open and enclosed emitter optics in the same footprint does not change the holster’s fit or retention characteristics.
For more on selecting the right optic for a carry pistol, see the case for RDS carry.
Iron Sight Co-Witness
If running backup iron sights with a mounted red dot, proper co-witness depends on the intersection of slide cut depth, optic model, and iron sight height. Suppressor-height sights (like the Ameriglo Optic Compatible set or Trijicon HD XR) provide a visible reference through or below the optic window, but they do not reliably co-witness across every optic and slide combination. The only reliable method is to verify height compatibility for your specific optic, slide, and sight set before purchase. See pistol sights and optic selection for detailed guidance on matching these components.
Critically, iron sight height does not affect Ironside holster fit. The sights sit within the holster’s open-top channel and do not contact the Kydex shell during holstering or the draw. The only scenario where sights could interfere is a dramatically oversized or non-standard rear sight (such as some competition-oriented adjustable sights with wide wings), which is uncommon on carry pistols.
Weapon-Mounted Lights
The Ironside is available in light-bearing configurations molded for specific weapon lights. The light body becomes part of the retention profile — the holster indexes on the light as well as the trigger guard. This means:
- A holster molded for a Surefire X300U will not retain a pistol with a Streamlight TLR-1 HL, and vice versa.
- Running the holster without the light it was molded for will result in poor retention and excessive movement.
- Swapping between X300U-A and X300U-B variants is generally fine, as the external body geometry is identical.
For light-bearing Ironside configurations, the light should be installed and tightened before confirming holster fit. A loose accessory rail interface can allow the light to shift just enough to bind during the draw.
Offset Mounts and Accessory Rails
The T.Rex Offset Mount is occasionally discussed in the context of OWB holsters, but it is a rifle accessory — a cantilevered optic mount for placing a backup red dot at a 35°–45° offset on an AR-pattern rifle. It has no relevance to handgun holster mounting. The naming can cause confusion for newer shooters browsing the product catalog, but the Offset Mount is entirely a rifle optic mounting solution.
Summary
The Ironside’s accessory ecosystem is intentionally narrow: belt loops in two widths, cant adjustment via screw positioning, and holster shells molded for specific gun-and-light combinations. There are no quick-detach plates, no mid-ride adapters, and no thigh-strap provisions. This is by design — the holster serves the civilian OWB role where simplicity, a tight-to-body profile, and reliable retention matter more than modularity. Users who need the modularity of QLS, UBL, or similar systems should look to the Ragnarok platform instead.