XTech Tactical MTX 365 9mm 3 Round Magazine Extension for 12 Round P365 Black 3 XTT132-BLK-P365-12RD. Designed for backup or glove box use this kit repurposes your existing magazine housing and includes a custom-engineered spring for reliability. This extension offers increased capacity and performance for EDC or range use. Specifications for XTech Tactical MTX 365 9mm 3 Round Magazine Extension for 12 Round P365: Manufacturer: XTech Tactical Color: Black Caliber: 9mm Luger Gun Make: SIG Sauer Gun Model: SIG Sauer P365 Features of XTech Tactical MTX 365 9mm 3 Round Magazine Extension for 12 Round P365 Adds +3 Rounds to P365 12-round magazines (9mm) Engineered extended spring for consistent feeding Quick installation with detailed video instructions Robust performance backed by innovative patented design Patents: US 11408697 B2 and US 11168954 B1 Package Contents: XTech Tactical MTX 365 9mm 3 Round Magazine Extension for 12 Round P365 What firearm models does the manufacturer say XTech Tactical MTX 365 9mm 3 Round Magazine Extension for 12 Round P365 is compatible with? The manufacturer says that XTech Tactical MTX 365 9mm 3 Round Magazine Extension for 12 Round P365 is compatible with SIG Sauer P365XTech Tactical XTT132-BLK-P365-12RD: MTX 365 9mm 3 Round Magazine Extension for 12 Round P365 Black