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The SIG SAUER P320 is one of the most adaptable handguns ever made. Its modular design means you can swap slides, calibers, and — most importantly — grip modules. A grip module changes how your pistol fits, feels, and performs in your hand without affecting the serialized firearm component.
At Mounts Plus, we carry a wide range of SIG P320 grip modules including OEM factory frames, custom options, and XSeries upgrades. Whether you’re building a compact carry gun, upgrading your full-size competition setup, or just want a different color or texture, you’ll find what you need here.
What Is a SIG P320 Grip Module?
The grip module is the polymer frame that houses your pistol’s fire control unit (FCU), magazine, and slide assembly. It’s not a serialized part, so you can order and swap modules freely — no FFL required.
SIG offers grip modules in several sizes: Full-Size, Carry, Compact, and Subcompact, along with specialized versions like XSeries, AXG, and TXG frames. Each one slightly changes the grip angle, beavertail design, and ergonomics to suit your shooting style.
Why Upgrade Your SIG P320 Grip Module
Upgrading your grip module isn’t just about aesthetics — it’s about performance.
Here’s what the right grip module can do:
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Improve Control: Better ergonomics and grip texture help manage recoil.
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Enhance Comfort: Choose the size and contour that fits your hand perfectly.
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Optimize Performance: Lighter or heavier frames can change your shooting balance.
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Expand Compatibility: Swap easily between Compact, Carry, or XSeries builds.
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Personalize Your Setup: Customize color, texture, and size to fit your preference.
If you’ve ever felt your P320 was just a little too big, too small, or too slick, a new grip module fixes that instantly.
Top SIG P320 Grip Modules Available
We stock both OEM SIG SAUER grip modules and custom aftermarket options. Every one of them installs easily — just drop in your FCU and reassemble.
1. OEM SIG SAUER Grip Modules
The factory modules are built to SIG’s precise specifications, offering a direct fit and consistent performance. Choose between standard or manual safety configurations.
Available Options:
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Full-Size, Compact, Carry, and XCompact
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XSeries and XCarry variants
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Manual-safety and non-safety frames
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Black, Coyote, and Gray finishes
Why choose OEM:
Durable, lightweight, and trusted by professionals. They’re perfect for shooters who want to stay true to the SIG feel but want a different size or finish.
2. XSeries Grip Modules
The XSeries line features an enhanced beavertail, deeper undercut trigger guard, and improved grip texture. Designed for performance shooting, these modules deliver a more aggressive and ergonomic feel.
Highlights:
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Factory XFive/XCarry inspired grip geometry.
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Comes with extended beavertail and higher backstrap cut.
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Ideal for faster follow-up shots and improved recoil management.
3. Custom and Aftermarket Grip Modules
If you want something that stands out, aftermarket manufacturers like Wilson Combat and Amend2 offer custom grip modules with upgraded textures, thumb ledges, and improved ergonomics.
Highlights:
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Enhanced stippling and grip texture.
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Aluminum and polymer frame options.
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Perfect for competition or professional use.
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Drop-in ready for all SIG P320 FCUs.
These modules not only look great but give you an edge in precision and handling.
Compatibility and Fit Guide
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Full-Size Modules: Accept full-size slides and magazines.
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Carry Modules: Compact slide length with full-size grip.
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Compact Modules: Shorter grip, better for concealed carry.
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XSeries: Performance-driven upgrade for all frame sizes.
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Manual Safety Models: Compatible with FCUs that include the manual safety lever.
If you’re unsure which grip module fits your pistol, check your current frame size or contact our team — we’ll help you match it perfectly.
How to Replace Your P320 Grip Module
Swapping grip modules is fast and simple:
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Make sure your firearm is unloaded.
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Remove the slide and takedown lever.
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Lift out the FCU (fire control unit).
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Drop the FCU into your new grip module.
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Reassemble the pistol.
That’s it — no tools, no fitting, no gunsmithing.
Why Buy from Mounts Plus
Mounts Plus is an authorized retailer for SIG SAUER and top aftermarket brands. We back every order with knowledgeable support, fast shipping, and authentic products.
Why shooters choose us:
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Fast, reliable shipping on all in-stock items.
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100% authentic OEM and aftermarket products.
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Expert customer service from people who shoot.
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Trusted by firearm professionals and enthusiasts nationwide.
We take pride in offering products that help you shoot better and perform with confidence.
Order Your SIG P320 Grip Module Today
Upgrade your SIG P320 with a grip module that fits your hand, your style, and your purpose. Whether you’re after a factory OEM frame, an XSeries upgrade, or a custom grip module, Mounts Plus has you covered.
In Stock – Ready to Ship
No FFL Required
Made in the USA
Frequently Asked Questions (FAQ)
Q: Do SIG P320 grip modules require an FFL?
A: No. Grip modules are not serialized components and can be shipped directly to your home.
Q: Are all P320 grip modules interchangeable?
A: Yes, as long as the module matches your slide and magazine size. The FCU drops into any compatible grip module.
Q: What’s the difference between Compact, Carry, and Full-Size grip modules?
A: Full-size modules fit longer slides and mags. Compact modules are shorter for concealed carry. Carry modules combine a compact slide with a full-length grip.
Q: Will the XSeries grip module fit my standard P320?
A: Yes. XSeries frames accept standard P320 slides and magazines while offering a more ergonomic grip.
Q: What are the best custom options for the P320?
A: Wilson Combat and Amend2 offer enhanced modules with improved texture, thumb ledges, and aesthetics for serious shooters.