Sig Sauer 40 S&W P320 Compact Caliber X-Change Kit 10 Rnd

The Sig Sauer 40 S&W P320 Compact Caliber X-Change Kit is a factory magazine and conversion system built for shooters who want to run their P320 Compact in a different caliber without swapping the entire gun. This 10-round magazine kit lets you transition your P320 Compact platform to fire .40 S&W, giving you flexibility on the range or at the range without the cost of a second firearm. If you already own a P320 Compact and want to explore another popular defensive or competition caliber, this X-Change kit handles the heavy lifting.

Sig Sauer engineered the P320 platform around modularity—you can swap calibers, grip sizes, and slide configurations to adapt one gun to multiple roles. This particular kit bundles everything needed to chamber .40 S&W in your Compact frame, so your trigger control and ergonomics stay consistent even as you change ammunition and ballistics. For competitors, recreational shooters, or defensive-minded folks who like having options without buying a second pistol, it's a practical choice.

Magazine capacity is set at 10 rounds, so this kit works well for shooters in restricted states or anyone simply preferring a lower-capacity platform. Sig's manufacturing standard means reliable feeding and durability across heavy training sessions or occasional use. This is genuine modular shooting—one gun, multiple capabilities, one simpler safe to manage.

Key Features

• Converts P320 Compact to .40 S&W caliber via X-Change system
• Includes 10-round magazines compatible with Sig P320 Compact platform
• Factory Sig Sauer engineering and quality control
• Lets you retain one frame while adding a second caliber option
• Ideal for competition, training, or defensive shooters seeking caliber flexibility

Specifications

Frequently Asked Questions

Will this X-Change kit work with my full-size P320?

No. This kit is engineered specifically for the P320 Compact frame. Sig makes separate X-Change kits for the full-size and subcompact versions of the P320 platform.

What comes in the kit?

The kit includes the .40 S&W conversion components and 10-round magazines configured for the P320 Compact. Refer to the product contents or contact Bosque Outdoors if you need clarity on exact components included.

Can I use this to shoot .40 S&W if I currently shoot 9mm in my P320 Compact?

Yes. The X-Change system is designed to let you swap calibers on the same P320 Compact frame, so you can transition from 9mm to .40 S&W by installing this kit.

Is this legal in restricted-magazine states?

The kit includes 10-round magazines. Magazine restrictions vary significantly by state and local jurisdiction. Check your local laws before ordering, as some states limit magazine capacity regardless of caliber or platform.