This page explains how our holsters are designed, why fitment is exact, and how to choose the right setup the first time. If you’re unsure about a specific configuration, reach out before ordering—we’d rather help you choose correctly than have you end up with the wrong holster.
How retention works on light-bearing holsters
Many holsters clamp primarily on the firearm. Our light-bearing holsters are different: the mounted weapon light is the retention device. That means the holster is engineered around the light’s shape and geometry to create a consistent “click-in” fit.
Retention is on the light: draw feel and security are consistent across slide lengths that share the same light fitment.
Exact light model required: close is not close enough—tiny differences change retention and safety.
Light must be installed: if the light is removed, the holster will not retain the pistol properly.
Rule of thumb: If your product description says “retention is on the light,” then the holster requires that light to be mounted.
Why the exact light model matters
Lights that look similar can be different where it counts: rail keys, bezel length, switch housings, body width, and mounting position. Because retention is built around those exact surfaces, swapping to a “similar” light can change retention, draw feel, or prevent the pistol from seating fully.
Same brand ≠ same fit: a light “family” is not automatically compatible across variants.
Same name ≠ same geometry: “HL,” “HL-X,” “Sub,” and “1913” versions can differ significantly.
Mounting position matters: the same light mounted differently on different rails can change fitment.
Firearm variations & fitment reality
Firearm “family names” can hide important differences. Frame size, rail geometry, dust cover shape, trigger guard profile, optic cut, and aftermarket modules can all affect holster compatibility—especially on precision-fit Kydex.
Common fitment breakers
Rail differences: accessory rails are not standardized across all models, even within a brand.
Aftermarket frames/modules: grip modules and frames can change key dimensions and light position.
Optics and irons: tall sights and certain optic footprints may require specific clearance.
“Almost the same gun”: similar slide lengths or names don’t guarantee the same holster fit.
Tight tolerances: intentional by design
Our holsters are built for secure retention and a consistent draw. That requires tight tolerances. We prioritize performance and safety over a loose, “soft” fit.
Security first: a duty-ready holster should not feel sloppy or unstable.
Consistency: repeatable presentation matters for training, range work, and competition.
Fit is by configuration: exact firearm + exact light + intended carry method.
Reality: A holster can be safe and secure, or it can be loose and forgiving. We choose safe and secure.
Wear marks & finish expectations
Holsters involve contact between Kydex and your firearm/light. That contact can produce cosmetic wear over time—especially on high points and contact surfaces. This is normal and expected with any securely-retained holster.
What to expect
Cosmetic wear on common contact areas (high points, edges, and controls).
Wear that increases with training volume, grit/debris, and repeated draws.
Different finishes wear differently—some show marks sooner than others.
IWB vs OWB: how to choose
The right choice depends on your goal: concealment, comfort, access, duty use, or competition speed. Here’s how to decide quickly.
Inside the Waistband (IWB)
Best for concealment. Designed to pull the grip inward and reduce printing.
Not ideal if:
You want fast on/off carry without a proper belt system.
You prefer maximum comfort with larger setups (big lights/compensators).
You’re primarily using the holster for duty or competition.
Outside the Waistband (OWB)
Best for training, range, duty, and competition. Typically faster access and more comfort.
Not ideal if:
You need deep concealment under light clothing.
You expect the holster to disappear under a t-shirt without layering.
You don’t use a rigid belt that supports OWB carry.
Belt attachments: what to pick
Attachments change how the holster rides, how stable it feels, and how easy it is to take on/off. If you’re on the fence, choose based on your daily routine (work belt, gym shorts, frequent removal, etc.).
Attachment
Best For
Requires Belt?
Strength
Tradeoff
DCC Monoblock
Everyday carry with a belt
Yes
Very secure & stable
Less “quick on/off” than clips designed for fast removal
UltiClip / Ultituck
No-belt carry or variable clothing
No (can be used with a belt too)
Very versatile
Placement matters more for comfort and stability
Soft loops
Maximum security with belt carry
Yes
Extremely secure
Slowest on/off
OWB loops / duty-style mounts
Training, range, duty, competition
Yes
Stability + access
Less concealment than IWB
Want the full breakdown? These guides go deeper on each carry style and attachment type:
Common wrong assumptions that cause fitment issues
“Same brand light = same holster fit.” Not true. Model variants can differ where retention happens.
“If it’s close, it will work.” Not with precision-fit Kydex. Close often means unsafe or inconsistent retention.
“I can remove the light later.” Not on light-bearing holsters—retention is designed around the light.
“A holster should never leave marks.” Normal use can create cosmetic wear on contact surfaces.
“Same gun family means same holster.” Rails, frames, and modules can vary and break compatibility.
Order-the-right-holster checklist
Confirm your exact firearm model (include generation, MOS/OR versions, and rail type when applicable).
Confirm your exact weapon light model (include “Sub,” “1913,” “Glock,” and model variants).
Confirm your carry style (IWB vs OWB, concealment vs training/duty/competition).
Choose the right belt attachment based on your clothing and how often you take the holster on/off.
Read the “not compatible” notes on the product page before ordering.
If anything is unclear, contact us with your exact firearm + light model before purchase.
FAQ
Do light-bearing holsters work without the light attached?
No. If retention is on the light, the holster requires the light to be installed to function properly and safely.
Why won’t a “similar” light fit?
Small changes in light geometry (keys, housings, bezels, switches, and mounting position) can change retention and seating. Our holsters are built around the exact model listed on the product page.
Will my holster scratch my firearm?
Cosmetic wear can occur on contact surfaces with normal use, especially with training volume and debris. Keeping the holster and firearm/light clean reduces friction and wear.
Do different slide lengths fit the same light-bearing holster?
Sometimes. Because retention is on the light, certain configurations may share compatible fitment, but you should always follow the exact firearm list on the product page. If your model isn’t listed, ask before ordering.
What’s the easiest way to avoid ordering the wrong holster?
Match your exact firearm model and exact light model to the product description, then confirm IWB vs OWB and your belt attachment choice. If anything is unclear, contact us with your setup before placing the order.
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5 stars because I have tested every RXM holster. 4bros is the best fit. 1 down side is the monoblock clip is one notch higher than the missing. This articulation causes the holster to ride outward. Drilling an extra hole above greatly resets the position making this perfect!
Ruger RXM IWB Holster
09/08/2026
Mark Pulford
Awesome holster
Awesome holster. It's my second one. Can't say enough about this company. They make fantastic products all day long. Keep up the great work.
4BROS Glock RaceCar Appendix Rig
09/05/2026
Dwight Richmond
10 out of 10 zero complaints! Awesome product
10 out of 10 zero complaints! Awesome product.
P365-XMACRO IWB Magazine Carrier (MACRO)
08/29/2026
Anonymous
TLR-7 SUB.
The light fits the G43X perfectly and as advertised The holster gets purchased on the light not the gun no complaints here on fit.
The light itself was simple to install comes with rechargeable battery which is nice including accessories to charge it and the buttons were customizable and easy to change I'm left-handed and so I switched the paddle so that I can get my trigger finger in from the left side without being interfered with. The features are straightforward once you play with them press and hold and the light comes on as long as you hold press forward once with a click the light stays on. Lumens seem powerful.
Streamlight TLR-7 HL-X Sub USB
08/27/2026
Jake McDill
Shits fucking sick
Gun fits good and tight like I like em makes me horny
Kimber DS Warrior & TLR-1 HL OWB Holster
08/26/2026
JORGE FLORES
Love this holster for my Sig P211
Love this holster for my Sig P211 . Smooth draw and perfect retention. Now getting one for my Kimber2k11
Sig Sauer P211 GTO IWB Holster
08/25/2026
dylan Sowell
Awesome
Best holster money can buy. hands down. quick shipping it was about a week wait but well worth it. i won’t be buying any other holsters.
Springfield Hellcat Pro with 1913 TLR-7 Sub IWB Holster
08/22/2026
Ben Hudson
Perfect fit for my Kimber 2k11 Pro Royal and SS
Perfect fit for my Kimber 2k11 Pro Royal and SS. Super speed from order to being shipped. First time customer and will be back for more!
Kimber 2K11 PRO 4.25" & TLR-1 HL IWB Holster
08/22/2026
Dion Windsor
Dad bod holster is amazing!!
Made perfect! My Kimber 2k11 carries nicely!! I adjusted the height and did some draws …. This dad bod holster is amazing!!
4BROS Kimber DadBod Appendix Rig
08/21/2026
Cody
The perfect wedge!
This is without a doubt the best wedge! I’ve tried the Philster flat, the Philster wedge rx (all sizes), the tier1 1.5” wide wedge (all sizes), and the tier1 2.25” wide wedge (all sizes). This is by far the most comfortable and doesn’t dig into your pelvis area! Will be getting more!
4BROS Holster Wedge
08/18/2026
A-A-Ron
Great holster
Super fast shipping and perfect fit
Staccato HD C4X & TLR-7 HL-X OWB Holster
08/17/2026
Travis Marks
Great for the Money
Fit and finish the as amazing for the price. Holds my firearm very firm.
This holster is the best I have found over the years. Great retention, fit, Finnish, and adjustability are on another level. I will be sticking to this company for all holsters going forward. Thank you!
Smith & Wesson M&P Shield X IWB Holster
08/15/2026
Aaron
Pretty happy with the purchase
Pretty happy I could find a holster for this combo , comfortable too
Springfield Armory Echelon 4.0C & 4.0FC and TLR-1 HL IWB Holster
08/10/2026
Daniel Koch
Used the thicker material in the duck camo
Used the thicker material in the duck camo. No regrets. Great for and finish. .
Kimber 2K11 OWB Magazine Carrier
08/09/2026
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This is a sturdy holster, but it is extremely bulky. I havent found a way to not print with it. Retention and fitment is good. But concealability is not there. Might as well be an OWB.