Sig Sauer P320 Holsters

Alien Gear Holsters develops dedicated holsters for the full Sig Sauer P320 lineup, including compact, carry, subcompact, and full-size models in both 9mm and .40 caliber. Each holster is molded for precise fit and retention—supporting P320 M17, M18, XCarry, XFull, XFive Legion, and XCompact variants with or without lights like the Foxtrot1X, Nightstick TCM-550XL, and Streamlight TLR-7A. Options range from Level I concealment rigs to Level II duty-ready holsters across IWB, OWB, chest, drop leg, and paddle configurations. Choose from ShapeShift, Cloak, Low-Pro, and Rapid Force lines based on mission, environment, and preferred draw style.

The P320’s modular chassis system creates flexibility but often causes uncertainty around holster compatibility. Alien Gear addresses that issue by offering holsters molded to specific P320 slide and grip modules—ensuring confident retention, accessory clearance, and real-world carry support without guesswork.

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Do Alien Gear holsters fit all Sig P320 models?

Alien Gear holsters are molded to fit specific Sig P320 variants—including Full Size, Compact, Carry, Subcompact, M17, M18, XCarry, XFull, XCompact, and the XFive Legion. Each holster is designed around the frame and slide profile of the chosen model to ensure proper fit and retention. Compatibility extends to both 9mm and .40 caliber configurations.

Can I get a holster for the Sig P320 XCarry with a light attached?

Yes, you can choose from holsters that support light-bearing setups such as the Sig P320 XCarry with Streamlight TLR-7A, Nightstick TCM-550XL, or TCM-550XLS. These holsters are specifically molded for your light-equipped firearm, ensuring secure retention and trigger guard protection.

What’s the best holster for concealed carry with a Sig P320 Compact or Carry model?

For concealed carry with the P320 Compact or Carry, an IWB (inside-the-waistband) holster from the Cloak or Low-Pro line is ideal. These holsters offer a slim profile, adjustable ride height, and retention settings that support discreet and secure daily carry.

Are there duty holsters available for the Sig P320 M17 or M18?

Yes, duty holsters are available for both the Sig P320 M17 and M18. The Rapid Force line includes Level II retention holsters built for law enforcement and military use, offering thumb-release mechanisms and rugged external mounting options like OWB and drop leg.

What’s the difference between Sig P320 Compact and Subcompact holster fitment?

The P320 Compact and Subcompact have different slide and grip dimensions, so holsters are not interchangeable between them. Alien Gear holsters are molded to match each model’s unique profile, ensuring secure fitment specific to either the Compact or Subcompact configuration.

Can I use the same holster for my P320 9mm and .40 cal models?

In most cases, yes—if the external slide and frame dimensions are identical. Alien Gear’s holsters for the Sig P320 are molded for exact size categories (e.g., Full Size 9mm/.40 cal or Compact 9mm/.40 cal) to ensure compatibility across calibers within the same size class.

Do you offer appendix carry holsters for the Sig Sauer P320?

Yes, appendix carry holsters are available for various P320 models. The Low-Pro AIWB and ShapeShift Appendix options support compact and subcompact P320s, providing minimal printing, a secure trigger guard, and comfort during seated or active carry.

Is there a chest holster option for the Sig P320 XFull or XFive Legion?

Yes, Alien Gear offers a chest holster option that supports full-size Sig P320 models like the XFull and XFive Legion. This carry style is useful for hiking, field use, or scenarios where waistband access is limited.

How do I choose between Level I and Level II retention for a P320 holster?

Choose Level I retention for concealed carry or off-duty use when speed and comfort are the priority. Opt for Level II retention—featuring an active locking mechanism—for duty, open carry, or high-movement scenarios where extra security is required.

Will these holsters work with the modular grip modules on the P320 platform?

Yes. While the P320’s modular Fire Control Unit allows grip module swaps, holsters must match the slide length and grip size. Alien Gear molds its holsters to the selected slide and frame configuration to ensure exact fitment regardless of internal chassis.

Why Choosing the Right Sig P320 Holster Matters

The Sig Sauer P320 platform offers modularity, versatility, and reliability, but that flexibility comes with a challenge: not every holster handles it well. Whether you’re carrying a P320 Compact 9mm for everyday defense or a P320 M17 with a mounted light for duty use, you need gear that understands the system—not just claims compatibility.

Alien Gear Holsters are molded for specific P320 configurations, not just "one-size-fits-most" shells. Each model in this collection accounts for slide length, grip module shape, and whether or not you’re running attachments like the Streamlight TLR-7A or Nightstick TCM-550XL. That means no guesswork—just precise retention, consistent draw feel, and full trigger guard coverage.

For concealed carriers, you’ll find IWB and appendix holsters that reduce printing without compromising comfort, even for larger models like the P320 XCarry. Our AIWB designs support seated movement, adjustable ride height, and sweat protection—crucial when you carry all day, every day.

If you’re a law enforcement officer, military user, or open carrier, the Rapid Force series offers rugged, Level II retention solutions with intuitive thumb release mechanisms. Whether it’s a Sig P320 M18 or XFull, these holsters retain under stress and release with speed when it counts.

For outdoor use, backcountry carry, or overland setups, chest holsters and drop leg configurations offer options that keep your P320 accessible when a waistband draw isn’t practical. These options are especially useful for the P320 XFive Legion or P320 XTEN, where size and weight can demand more support.

Ultimately, choosing a holster for your Sig P320 isn’t about brand—it’s about trust. You need to know that when you gear up, your holster was designed for the exact configuration in your hands. That’s what this collection delivers: mission-ready performance built around your platform, your carry style, and your environment.