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At Coldre Store, we know that mounting a weapon light to your Arex Delta is a deliberate operational choice — and it immediately changes your holster requirements. A standard Arex Delta holster designed for a bare pistol cannot safely accommodate a weapon-mounted light. The light body extends forward and below the trigger guard in ways that alter retention geometry, trigger guard coverage, and draw-stroke clearance. Our Arex holster with light collection solves this completely: every shell is vacuum-molded to your specific Arex Delta model and weapon light combination, delivering a rattle-free, precise fit from the first carry day.
The Arex Delta’s multi-slot Picatinny rail supports a wide range of compact weapon lights in the same class as lights designed for Glock-sized pistols — giving Delta carriers access to the most holster-supported lights in the market. But holster compatibility must be confirmed at the level of the specific light model, not just the pistol. A holster listed for the Arex Delta without specifying the light it accommodates is not a light bearing holster — it’s a bare-pistol holster that will not correctly retain or clear your mounted light.
The Arex Delta platform spans several generations and configurations, each with specific dimensions that affect holster fit:
Because the Delta’s external dimensions are close — but not identical — to equivalent Glock models, many carriers successfully use Glock-compatible light bearing holsters as a cross-fit solution. This approach works most reliably when retention is driven by the weapon light body rather than the pistol’s frame geometry — a design used by universal-fit light-retention holsters. However, a holster purpose-built for the Arex Delta and your specific light will always deliver superior retention precision, trigger guard coverage, and draw consistency compared to a cross-fit solution.
The Arex Delta’s Picatinny rail accommodates compact and mid-size weapon lights in the following well-documented configurations:
Streamlight:
TLR-7A — the most widely supported compact light for Delta light bearing holsters; compact body, ambidextrous switches, and documented holster coverage across multiple Kydex makers
TLR-7 Sub — subcompact variant for compact Delta configurations
TLR-1 HL — full-size duty light with documented Delta compatibility via Glock 17 cross-fit holsters
Olight:
Baldr S — compact light with integrated green or white laser; documented Delta holster support from custom Kydex makers
PL-Mini 2 Valkyrie — compact format for everyday carry configurations
PL-Pro — full-size output in a mid-size body; documented in Delta AIWB configurations via Glock 19 cross-fit
SureFire:
X300U-A — full-size duty light compatible with Delta via Glock 17-compatible light bearing duty holsters
When selecting a light for your Arex Delta, confirming holster availability for that specific light model before purchasing the light is the most efficient sequence — it eliminates the scenario of committing to a light that lacks purpose-built holster support for your carry style.
IWB light bearing holsters for the Arex Delta are the correct format for concealed carry. The weapon light adds significant bulk to the pistol’s profile — a modwing or claw attachment on the holster is essential to counteract the additional weight and forward mass, rotating the grip inward against the body to prevent printing through the cover garment. Dual-clip attachment distributes the combined weight of the pistol and light across a wider section of the belt, maintaining stable holster position during movement.
OWB light bearing holsters for the Arex Delta serve duty, range, and open-carry contexts. Kydex OWB shells for the Delta with common lights are available in Level I passive retention and Level II active retention configurations — the appropriate level depending on the operational environment and whether the holster must secure the pistol through physical activity, vehicle operations, or force-on-force scenarios.
Every Arex Delta light bearing holster purchase requires confirming four compatibility variables before ordering:
Delta generation and variant: Gen 2, Gen 2 X, Delta M, and REX Zero 1 each have distinct external dimensions — confirm which variant your holster is molded for
Light model: specify the exact light (e.g., TLR-7A vs. TLR-7 Sub vs. TLR-1 HL) — shells are not interchangeable between light models even on the same pistol
Optic cut: if your Delta carries a red dot, confirm the shell includes the correct cut for your specific optic — combined light-and-optic configurations require a shell molded for all three components
Carry format: IWB (concealed carry), OWB (duty/range), or AIWB — carry position determines shell geometry, clip count, and claw/wing availability
An Arex holster with light is the required solution for any Delta carrier running a weapon-mounted light as part of their standard configuration:
Concealed carriers (EDC)Â who run a weapon light on their Delta for home defense readiness and need a holster that retains the full pistol-and-light configuration during daily carry
Law enforcement and security professionals carrying the Arex Delta as a service or off-duty sidearm with a weapon light for target identification and threat discrimination
Home defense and low-light preparedness — carriers who keep the Delta holstered with the light mounted and need a secure platform that maintains retention and trigger guard coverage at all times
Range and training use — holsters that retain the light through dynamic draw-and-reholster repetitions at training speed without shift or separation
Mounting a weapon light to your Arex Delta without a holster built for that combination introduces preventable safety and reliability variables. A purpose-built Arex light bearing holster eliminates all of them — precise retention, full trigger guard coverage, correct switch clearance, and a consistent draw stroke that works the same way every time.
Questions about compatibility or fit? Visit our FAQ or contact our team directly.
