Sig Sauer 9/40/357 Compact Medium Grip Module, Black

The Sig Sauer 9/40/357 Compact Medium grip module is a genuine factory part that lets you customize your P250 or P320 pistol to fit your hand and shooting style. If you've got a full-size P250 or P320 and want a more compact feel, or you're building a modular setup that works across multiple calibers, swapping in a compact medium grip module is a quick way to adjust ergonomics without buying a whole new gun. It's genuine Sig polymer with the same textured surface you expect from the factory, so you're getting proven ergonomics and durability, not an aftermarket compromise.

This grip module accepts 9mm, .40 S&W, and .357 SIG slides and barrels, making it a smart choice if you shoot multiple calibers or want flexibility in your setup. The compact medium size splits the difference between subcompact and full-size frames, giving you a balance of control and concealability. Installation is straightforward, but remember that you'll need a firing control unit to complete the build—the grip module itself is just the frame component.

Whether you're a competition shooter dialing in the ideal ergonomic setup, a working professional who wants options, or someone who just prefers a smaller grip on a duty gun, this is the genuine Sig part that does the job right. Black polymer finish matches standard factory P250 and P320 guns.

Key Features

• Genuine Sig Sauer factory polymer construction with aggressive texture for secure handling
• Compact medium frame size for reduced girth compared to full-size grips
• Compatible with 9mm, .40 S&W, and .357 SIG calibers via appropriate slide and barrel
• Drop-in fit on P250 and P320 modular platform pistols
• Simple installation—no gunsmithing required

Specifications

Frequently Asked Questions

Will this grip module work with my P250 or P320?

Yes. This is a genuine Sig Sauer grip module designed for both P250 and P320 pistols. It's part of Sig's modular system, so installation is straightforward on either platform.

What do I need to complete a working gun with this grip module?

You'll need a firing control unit and a slide and barrel in your chosen caliber (9mm, .40 S&W, or .357 SIG). The grip module is the frame component only.

Can I use this grip with multiple calibers?

Yes. The grip module itself is caliber-agnostic. You can swap between 9mm, .40 S&W, and .357 SIG by changing the slide and barrel—the grip module stays the same.

How does compact medium size compare to full-size?

The compact medium grip module is smaller in circumference than a full-size frame, making it more comfortable for shooters with smaller hands and easier to conceal while retaining more control than a subcompact.