Holsters for Sig Sauer P320 M18

How to choose the best holster for your Sig M18

Choosing the right holster for your SIG Sauer P320 M18 starts with how and where you carry. The M18, trusted by the U.S. military and law enforcement, deserves a holster that matches its proven reliability. Whether you’re after the best holster for SIG P320 M18 in terms of durability and draw speed, or the most comfortable SIG P320 M18 holster for all-day concealed or duty carry, it’s all about finding a design that fits your body and lifestyle. From classic leather to precision-molded Kydex, from IWB options for everyday concealment to OWB and duty holsters for open carry, the right choice makes your M18 both secure and instantly accessible.

Carry Options for your Sig M18 holsters

Concealed Carry

Concealed carry is about staying discreet while still being able to grab your gun fast. A good Sig M18 concealed carry holster rides close to your body, hides the grip, and cuts down on printing. It feels light, doesn’t shift around when you move, and won't jab you when you sit. Slim Kydex or soft leather both work, depending on what feels better on your skin or under your clothes.

IWB Holsters

Inside-the-waistband carry keeps the Sig Sauer M18 tucked in close. That’s helpful when you're sitting for hours or moving through tight spaces. These holsters reduce printing and stay hidden under light clothing. Adjustable clips let you shift the holster forward or back until it feels right. SIG P320 M18 IWB holster stay secure without bulk, even when you're on the go.

OWB Holsters

Outside-the-waistband carry gives you a bit more space and speed. These are easier to draw from, especially with a jacket or untucked shirt. A good SIG M18 Holster OWB sits just right so the grip is easy to reach without sticking out. Look for a slight forward angle if you want a quicker, more natural pull.

Shoulder Holsters

Shoulder holsters carry the pistol under your arm, which works great for folks who drive a lot or prefer to stay off the waistband. A SIG P320 M18 Shoulder Holster balances well and keeps the gun within reach, even with outer layers. It’s a smart option when you need comfort and accessibility in colder weather or long rides.

Chest Holsters 

A SIG M18 chest holster is ideal for hikers, hunters, or anyone who spends time outdoors. It positions the pistol high on your torso, keeping it easily accessible while freeing your waist from extra gear. This setup prevents interference with backpacks or seatbelts, offering a balanced and secure way to carry your P320 M18 in the field or on long trips.

appendix holsters

Appendix carry puts the pistol up front, which gives you a fast draw and easy access when standing or seated. A Sig M18 appendix holster needs to be shaped right to avoid digging in. The right one will ride low and stay secure against your beltline, with just enough cant to clear your leg and waistband.

drop leg holsters

Drop leg holsters free up your waist and put the pistol on your thigh, making it easier to reach during range time or active use. A Sig M18 drop leg holster straps in tight and adjusts to your leg size so it doesn’t move around. It’s great if you carry other gear on your belt or want fast access without reaching across your body.

Duty Holsters 

Originally developed for the U.S. Armed Forces, the SIG P320 M18 is a trusted sidearm among service members and law enforcement alike. A SIG M18 duty holster or military SIG M18 holster must match that same level of reliability and readiness. Built with rugged materials and enhanced retention systems such as Level II or Level III locking, these holsters ensure your firearm stays secure under any condition while allowing a fast, instinctive draw when it counts most. Whether you’re in uniform or training off-duty, a properly fitted duty holster keeps your M18 mission-ready at all times.

Left Handed Holsters 

Left-handed shooters can rely on a SIG M18 holster left hand design that mirrors the same fit, retention, and comfort as right-handed options. Crafted for natural draw and smooth reholstering, these holsters come in various carry styles—inside the waistband, outside the waistband, shoulder, or duty configurations—ensuring every left-handed carrier finds the perfect match for their daily needs.

holsters with light

Adding a weapon light changes your holster needs. A good Sig P320 M18 holster with light space is molded to fit around the light housing without extra wiggle or drag. That means smooth draws and no gaps or snags when you walk, sit, or carry under layers. It helps everything stay in place without compromising grip or access.

If you run your sidearm with a mounted light, the right holster makes all the difference. A SIG M18 holster with Olight Baldr Mini gives you a compact, balanced setup that’s ideal for everyday carry or home defense. Those using a SIG M18 TLR1 holster will appreciate its fit for one of the most popular full-size tactical lights, offering a steady hold and reliable draw even with a larger setup.

For professional or duty use, a SIG M18 SureFire X300 holster ensures rugged retention and smooth operation with one of the most trusted lights in the field. And if you prefer something lighter and more compact, the SIG M18 TLR7A holster combines fast access with minimal bulk, keeping your pistol easy to conceal while still ready for low-light encounters.

holsters with red dot

If your M18 has a red dot optic, this holster is shaped to keep it protected and aligned. That matters if you carry daily and don’t want to re-zero after each bump or draw. A Sig P320 M18 holster with red dot support holds firm so nothing shifts, even if you move fast or wear it all day.

Material options for Sig P320 M18 holsters

See Our Holsters in Action

Our Sig Sauer M18 holsters are designed for practicality and comfort. This video provides a close-up look at the holster's fit, the smoothness of the draw, and how it maintains a low profile under various clothing styles.

Summary

Finding the right M18 SIG Sauer holster means balancing comfort, retention, and accessibility. Every holster for SIG P320 M18 in our collection is built around the pistol’s exact shape to guarantee a secure fit and confident draw, no matter your carry style. From concealed carry and duty-ready rigs to light-bearing and left-handed options, each model is crafted to complement the M18’s proven reliability and performance. With the right holster, your P320 M18 stays ready, protected, and perfectly at home wherever you carry.