XTech Tactical MTX 365 grip extension attaches to the OEM Sig Sauer P365 9mm 10 round magazines to convert the grip length from standard to XL. This extension provides extra control by adding length to the grip but doesn’t allow for any additional rounds. Our unique approach gives you the ideal complete high grip on the pistol, optimizing your control over the firearm—a significant advantage over traditional pinky extensions that leave the hand partially unsupported.
Made in the USA and California compliant, this innovative and patented grip extension is 100% reliable and designed to give you total control and improved grip on your firearm. The unique design enables the extender to work on the Sig mag body with inward-facing tabs where other extenders cannot be used. The SIG P365 Grip Extension is compatible with factory 10-round 9mm magazines for the standard P365 9mm frame; this ONLY works with Sig P365 10 round 9mm magazines and standard frames.
The SIG P365 Grip Extension provides the perfect pinky extension for tactile feel and control, allowing you to maintain accuracy and precision while shooting. The grip extension dramatically improves grip and control without having to go for the XL frame, giving you the confidence to manage your firearm in any situation successfully.





