XTech Tactical MTX 365 3 Round Magazine Extender w/Spring Black 3 XTT132-BLK P365. Designed for factory 10-round magazines this extension is not compatible with 12rd or 15rd magazines or P365X XL or Macro frames. Its patented design ensures seamless integration unmatched reliability and last-round bolt hold open with its custom-engineered spring. Includes an installation video QR code for easy setup. Specifications for XTech Tactical MTX 365 3 Round Magazine Extender w/Spring: Manufacturer: XTech Tactical Color: Black Magazine Capacity: 3 Round Gun Make: SIG Sauer Gun Model: SIG Sauer P365 Features of XTech Tactical MTX 365 3 Round Magazine Extender w/Spring Adds +3 Rounds to P365 10-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 3 Round Magazine Extender w/Spring What firearm models does the manufacturer say XTech Tactical MTX 365 3 Round Magazine Extender w/Spring is compatible with? The manufacturer suggests that XTech Tactical MTX 365 3 Round Magazine Extender w/Spring is compatible with SIG Sauer P365XTech Tactical XTT132-BLK P365: MTX 365 3 Round Magazine Extender w/Spring Black