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Fit Finder › Every pistol, A to Z
Holsters for your Sig Sauer M18
Your setup
All results below are based on this configuration.
No brand lists a fit for that light and optic together. Try another combination, or ask the Fit Finder.
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Every holster that fits your setup
From the makers' published fit charts, including models we do not have in stock.
Safariland21 holstersConfirmed by SafarilandView holsters
51985198-750
Concealment
Open Top Paddle and Belt Loop Combo w/ Detent
537537-750
Concealment
GLS Open Top Concealment Holster
578578-750
Concealment
GLS Pro Fit Paddle and Belt Loop Combo Concealment Holster
60046004-450
Tactical
SLS Tactical Holster
63046304-450
Tactical
ALS/SLS Tactical Holster
63546354-450
Tactical
ALS Tactical Holster
63606360-750
Duty · Level III retention
ALS/SLS Mid-Ride Duty Holster, Level III Retention
637637-750
Concealment
ALS Belt Slide Concealment Holster
63786378-750
Concealment
ALS Paddle and Belt Loop Combo Concealment Holster
63846384-450
Tactical
ALS OMV Tactical Holster
63906390-750
Duty · Level I retention
ALS Mid-Ride Duty Holster, Level I Retention
70047004-450
Tactical
7TS SLS Tactical Holster
72807280-750
Duty · Level II retention
7TS SLS Mid-Ride Duty Holster, Level II Retention
73047304-450
Tactical
7TS ALS/SLS Tactical Holster
73547354-450
Tactical
7TS ALS Tactical Holster
73607360-750
Duty · Level III retention
7TS ALS/SLS Mid-Ride Duty Holster, Level III Retention
73787378-750
Concealment
7TS ALS Paddle and Belt Loop Combo Concealment Holster
73847384-450
Tactical
7TS ALS OMV Tactical Holster
73907390-750
Duty · Level I retention
7TS ALS Mid-Ride Duty Holster, Level I Retention
GRAVITYGRAVITY-750-A-0
Concealment
Open Top Paddle Concealment Holster
INCOGINCOG-750-A-0
Concealment
Inside-The-Waistband Concealment Holster
63046304-7502
Tactical
ALS/SLS Tactical Holster
63546354-7502
Tactical
ALS Tactical Holster
63606360-7502
Duty · Level III retention
ALS/SLS Mid-Ride Duty Holster, Level III Retention
63846384-7502
Tactical
ALS OMV Tactical Holster
63906390-7502
Duty · Level I retention
ALS Mid-Ride Duty Holster, Level I Retention
73047304-7502
Tactical
7TS ALS/SLS Tactical Holster
73547354-7502
Tactical
7TS ALS Tactical Holster
73607360-7502
Duty · Level III retention
7TS ALS/SLS Mid-Ride Duty Holster, Level III Retention
73787378-7502
Concealment
7TS ALS Paddle and Belt Loop Combo Concealment Holster
73847384-7502
Tactical
7TS ALS OMV Tactical Holster
73907390-7502
Duty · Level I retention
7TS ALS Mid-Ride Duty Holster, Level I Retention
70047004-75227
Tactical
7TS SLS Tactical Holster
72807280-75227
Duty · Level II retention
7TS SLS Mid-Ride Duty Holster, Level II Retention
73047304-75227
Tactical
7TS ALS/SLS Tactical Holster
73547354-75227
Tactical
7TS ALS Tactical Holster
73607360-75227
Duty · Level III retention
7TS ALS/SLS Mid-Ride Duty Holster, Level III Retention
73787378-75227
Concealment
7TS ALS Paddle and Belt Loop Combo Concealment Holster
73847384-75227
Tactical
7TS ALS OMV Tactical Holster
73907390-75227
Duty · Level I retention
7TS ALS Mid-Ride Duty Holster, Level I Retention
INCOGINCOG-750-A-7
Concealment
Inside-The-Waistband Concealment Holster
SOLISSOLIS-750-A-7
Concealment
ALS Paddle Concealment Holster
6304RDS6304RDS-7502
Tactical
ALS/SLS RDS Tactical Holster
6354RDS6354RDS-7502
Tactical
ALS RDS Tactical Holster
6354RDSO6354RDSO-7502
Tactical
ALS RDSO Tactical Holster
6360RDS6360RDS-7502
Duty · Level III retention
ALS/SLS RDS Mid-Ride Duty Holster, Level III Retention
6378RDS6378RDS-7502
Concealment
ALS RDS Paddle and Belt Loop Combo Concealment Holster
6378RDSO6378RDSO-7502
Concealment
ALS RDSO Paddle and Belt Loop Combo Concealment Holster
6384RDS6384RDS-7502
Tactical
ALS RDS OMV Tactical Holster
6384RDSO6384RDSO-7502
Tactical
ALS RDSO OMV Tactical Holster
6390RDS6390RDS-7502
Duty · Level I retention
ALS RDS Mid-Ride Duty Holster, Level I Retention
6390RDSO6390RDSO-7502
Duty · Level I retention
ALS RDSO Mid-Ride Duty Holster, Level I Retention
7304RDS7304RDS-7502
Tactical
7TS ALS/SLS RDS Tactical Holster
7354RDS7354RDS-7502
Tactical
7TS ALS RDS Tactical Holster
7360RDS7360RDS-7502
Duty · Level III retention
7TS ALS/SLS RDS Mid-Ride Duty Holster, Level III Retention
7378RDS7378RDS-7502
Concealment
7TS ALS RDS Paddle and Belt Loop Combo Concealment Holster
7384RDS7384RDS-7502
Tactical
7TS ALS RDS OMV Tactical Holster
7390RDS7390RDS-7502
Duty · Level I retention
7TS ALS RDS Mid-Ride Duty Holster, Level I Retention
BALLASTBALLAST-750-1-2
Duty
6304RDS6304RDS-75227
Tactical
ALS/SLS RDS Tactical Holster
6354RDS6354RDS-75227
Tactical
ALS RDS Tactical Holster
6354RDSO6354RDSO-75227
Tactical
ALS RDSO Tactical Holster
6360RDS6360RDS-75227
Duty · Level III retention
ALS/SLS RDS Mid-Ride Duty Holster, Level III Retention
6378RDS6378RDS-75227
Concealment
ALS RDS Paddle and Belt Loop Combo Concealment Holster
6378RDSC6378RDSC-75227
Concealment
ALS RDSC Paddle and Belt Loop Combo Concealment Holster
6378RDSO6378RDSO-75227
Concealment
ALS RDSO Paddle and Belt Loop Combo Concealment Holster
6384RDS6384RDS-75227
Tactical
ALS RDS OMV Tactical Holster
6384RDSO6384RDSO-75227
Tactical
ALS RDSO OMV Tactical Holster
6390RDS6390RDS-75227
Duty · Level I retention
ALS RDS Mid-Ride Duty Holster, Level I Retention
6390RDSO6390RDSO-75227
Duty · Level I retention
ALS RDSO Mid-Ride Duty Holster, Level I Retention
7304RDS7304RDS-75227
Tactical
7TS ALS/SLS RDS Tactical Holster
7354RDS7354RDS-75227
Tactical
7TS ALS RDS Tactical Holster
7360RDS7360RDS-75227
Duty · Level III retention
7TS ALS/SLS RDS Mid-Ride Duty Holster, Level III Retention
7378RDS7378RDS-75227
Concealment
7TS ALS RDS Paddle and Belt Loop Combo Concealment Holster
7384RDS7384RDS-75227
Tactical
7TS ALS RDS OMV Tactical Holster
7390RDS7390RDS-75227
Duty · Level I retention
7TS ALS RDS Mid-Ride Duty Holster, Level I Retention
BALLASTBALLAST-750-1-7
Duty
SAFARIVAULTSAFARIVAULT-450-1-7
Duty
6304RDS6304RDS-75228
Tactical
ALS/SLS RDS Tactical Holster
6354RDS6354RDS-75228
Tactical
ALS RDS Tactical Holster
6360RDS6360RDS-75228
Duty · Level III retention
ALS/SLS RDS Mid-Ride Duty Holster, Level III Retention
6378RDS6378RDS-75228
Concealment
ALS RDS Paddle and Belt Loop Combo Concealment Holster
6384RDS6384RDS-75228
Tactical
ALS RDS OMV Tactical Holster
6390RDS6390RDS-75228
Duty · Level I retention
ALS RDS Mid-Ride Duty Holster, Level I Retention
SAFARIVAULTSAFARIVAULT-450-1-75
Duty
6304RDS6304RDS-75029
Tactical
ALS/SLS RDS Tactical Holster
6354RDS6354RDS-75029
Tactical
ALS RDS Tactical Holster
6360RDS6360RDS-75029
Duty · Level III retention
ALS/SLS RDS Mid-Ride Duty Holster, Level III Retention
6378RDS6378RDS-75029
Concealment
ALS RDS Paddle and Belt Loop Combo Concealment Holster
6384RDS6384RDS-75029
Tactical
ALS RDS OMV Tactical Holster
6390RDS6390RDS-75029
Duty · Level I retention
ALS RDS Mid-Ride Duty Holster, Level I Retention
Nothing matches these filters.
DeSantis27 holstersConfirmed by DeSantisView holsters
Cazzuto
Current production · DeSantis lists: “Sig Sauer P320-M18”
Cozy Partner
Current production · DeSantis lists: “Sig Sauer P320-M18”
F.A.M.S. W/ Lock Hole
Current production · DeSantis lists: “Sig Sauer P320-M18”
Facilitator
Current production · DeSantis lists: “Sig Sauer P320-M18”
Infiltrator Air
Current production · DeSantis lists: “Sig Sauer P320-M18”
Inner Piece 2.0
Current production · DeSantis lists: “Sig Sauer P320-M18”
Intruder 2.0
Current production · DeSantis lists: “Sig Sauer P320-M18”
Just Cause 2.0 Holster
Current production · DeSantis lists: “Sig Sauer P320-M18”
Mini Scabbard
Current production · DeSantis lists: “Sig Sauer P320-M18”
NY Undercover GRD Rig
Current production · DeSantis lists: “Sig Sauer P320-M18”
Osprey
Current production · DeSantis lists: “Sig Sauer P320-M18”
Outdraw Chest Rig
Current production · DeSantis lists: “Sig Sauer P320-M18”
Patriot GRD Shoulder Rig
Current production · DeSantis lists: “Sig Sauer P320-M18”
Pro Stealth
Current production · DeSantis lists: “Sig Sauer P320-M18”
SL Raptor
Current production · DeSantis lists: “Sig Sauer P320-M18”
Slim-Tuk
Current production · DeSantis lists: “Sig Sauer P320-M18”
Speed Scabbard
Current production · DeSantis lists: “Sig Sauer P320-M18”
Super Stealth
Current production · DeSantis lists: “Sig Sauer P320-M18”
The Insider
Current production · DeSantis lists: “Sig Sauer P320-M18”
Thumb Break Scabbard
Current production · DeSantis lists: “Sig Sauer P320-M18”
Triple Agent
Current production · DeSantis lists: “Sig Sauer P320-M18”
Tuck-This II
Current production · DeSantis lists: “Sig Sauer P320-M18”
Vanquisher
Current production · DeSantis lists: “Sig Sauer P320-M18”
Variable 13
Current production · DeSantis lists: “Sig Sauer P320-M18”
Variable 87
Current production · DeSantis lists: “Sig Sauer P320-M18”
Variable GRD
Current production · DeSantis lists: “Sig Sauer P320-M18”
Veiled Partner
Current production · DeSantis lists: “Sig Sauer P320-M18”
Nothing matches these filters.
Galco2 holstersConfirmed by GalcoView holsters
Gun number 822
RH · e.g. CM822
Chart says: “Sig P320 Compact/X-Compact, M18; Beretta APX; CZ P-07”
Gun number 823
LH · e.g. CM823
Chart says: “LH of 822 (Sig M18/P320 Compact)”
Nothing matches these filters.
Alien Gear2 holstersConfirmed by Alien GearView holsters
PHOTON Holster (light-bearing)
OWB/multi-mount light-bearing · Current
Chart says: “Sig Sauer SIG P320 M18”
ShapeShift 4.0 IWB Holster
IWB concealment (modular) · Current
Chart says: “Sig Sauer Sig P320 M18 (Not optic compatible)”
Nothing matches these filters.
Blade-Tech10 holstersConfirmed by Blade-TechView holsters
Eclipse OWB Holster
OWB · Current
Chart says: “Sig P320C / M18”
Eclipse OWB Holster - No Weapon Light
OWB · Current
Chart says: “Sig Sauer P320C / M18 (part no. TES320CBLKP1)”
Klipt IWB Holster
IWB · Current
Chart says: “Sig P320C / M18 (SKU HOLX0090KLP320CAKBLKRH)”
Nano IWB Holster
IWB (RH only) · Current
Chart says: “Sig P320C / M18 (SKU NANOS320C)”
Signature OWB Holster
OWB · Current
Chart says: “Sig P320C / M18”
Total Eclipse 2.0 Holster with Weapon Light
OWB/IWB light-bearing · Current
Chart says: “Sig Sauer P320 FS / P320C / M17 / M18 w/ TLR-1 HL (TLR-1 HL; part no. TE2SIGP320TLR1)”
Total Eclipse 2.0 Modular Holster
OWB/IWB modular · Current
Chart says: “Sig P320C / M18”
Ultimate Klipt AIWB Holster
AIWB (ambi) · Current
Chart says: “Sig P320C / M18 (SKU HOLX0091UKH320CAMBI)”
VALOR Duty Holster
Duty (Level I/II/III) · Current
Chart says: “Sig Sauer M18”
Velocity OWB Holster
OWB · Current
Chart says: “Sig P320C / M18 (3.9") (SKU VHOWBSIG320CRH / VHOWBTLSIG320CRH)”
Nothing matches these filters.
Listed fits come from each brand's own published fit charts and order guides; Chicks Open Carry cross-fits are guns we tested in our shop. DeSantis, Galco, Alien Gear and Blade-Tech are listed only where their chart names this pistol, quoted as printed (DeSantis fit chart (2017) and desantisholster.com (read 2026-10-15); Galco's own product pages (2026); Alien Gear's own site (read October 2026); Blade-Tech's own site (read October 2026), and older dealer, press and government records back to 2011). Safariland, DeSantis, Galco, Alien Gear and Blade-Tech are their owners' trademarks; Chicks Open Carry is not affiliated with them. Not sure? Try the Fit Finder.
What the fit badges mean
- Confirmed by the brand
- Listed in the brand's official fit guide.
- Confirmed by Chicks Open Carry
- Tested by Chicks Open Carry for fit and proper retention, in the exact setup shown — generation, light and optic. Not listed by the brand.