XTech MTX 365 Magazine Extension +3 Rounds

Enhanced Capacity for Your Sig Sauer P365

The XTech MTX 365 Magazine Extension represents a thoughtful solution to one of the P365's few limitations: magazine capacity. This extension increases your standard 10-round magazine to 13 rounds, providing meaningful additional firepower without sacrificing the compact profile that makes the P365 such an effective everyday carry pistol.

Design and Compatibility

Grip Length Matching: The extension is engineered to match the grip length of the P365X and P365XL models, giving your standard P365 a more ergonomic feel. This is not merely cosmetic—the extended grip surface provides measurably better control and a more confident hold, particularly important during defensive shooting.

Secure Attachment: The patented design features inward-facing tabs that grip Sig Sauer magazines with precision. Installation is straightforward, and the extension seats firmly without rattling or shifting during use.

Materials and Reliability

Constructed from durable injection-molded polymer, the MTX extension is built to withstand the rigors of daily carry and regular range use. The custom-engineered spring ensures reliable feeding through all 13 rounds and maintains proper last-round bolt hold open functionality—a critical feature for tactical reloads and administrative handling.

Practical Advantages

• Increases magazine capacity by 30 percent
• Compatible with factory Sig Sauer 10-round magazines
• Works with Wilson Combat P365 frames
• Easy installation requiring no gunsmithing
• Maintains reliability and feeding consistency

Whether you carry daily or shoot competitively, this extension offers a practical way to enhance your P365's effectiveness.