Xtech Tactical Xtt132Blk Mtx 9Mm Fits Sig 365 Black Polymer

The Xtech Tactical MTX 9mm magazine extension for the Sig Sauer P365 is a practical upgrade for shooters who want a longer grip without buying a new pistol. This black polymer extender converts your factory 10-round P365 magazines into 13-round capacity mags, effectively giving your carry gun the grip length feel of the larger P365X/XL models. If you've shot a full-size Sig and prefer that ergonomic footprint on your compact, this solves that problem with a simple magazine swap—no gunsmithing required.

Built with a patented design that works with Sig's inward-facing magazine tabs, the MTX extension handles a geometry that stumps other aftermarket extenders. The included spring is tuned specifically for P365 reliability, maintaining proper feeding and last-round bolt hold open function. Installation is straightforward, and the durable polymer construction is built to last thousands of rounds without degradation. The extender also works with Wilson Combat P365 frames if you're running a custom build.

This is the kind of thoughtful gear that makes a difference in daily carry comfort without changing your gun. Whether you're at the range running drills or carrying for personal protection, having that extra round and improved grip purchase is worth the minimal investment.

Key Features

• Converts OEM Sig Sauer P365 10-round magazines to 13-round capacity
• Extends grip length to match P365X/XL ergonomics
• Patented design compatible with factory Sig magazine geometry
• Purpose-engineered spring for P365 platform reliability and bolt hold open
• Black polymer construction for durability and corrosion resistance
• Compatible with Wilson Combat P365 frames
• Simple installation—no tools or gunsmithing needed

Frequently Asked Questions

Will this work with my Sig Sauer P365 magazines?

Yes, the MTX extension is designed to fit factory Sig Sauer P365 10-round magazines. The patented design accommodates Sig's inward-facing magazine tabs, which makes it compatible with standard OEM mags where other aftermarket extenders may not fit.

Does this extension maintain reliable feeding and bolt hold open?

Yes. The spring included with the extender is engineered specifically for the P365 platform to ensure unmatched reliability, proper feeding, and last-round bolt hold open function.

What's the capacity increase?

The MTX extension converts your factory 10-round P365 magazines to 13-round capacity, adding three rounds per magazine.

Is this compatible with P365X/XL frames?

The extension is designed to give your standard P365 the grip length feel of the P365X/XL. It also works with Wilson Combat P365 frames if you're running a custom build.