The MTX 365 +3 Magazine Extender improves the grip and capacity of your Sig Sauer P365, transforming your standard pistol into the extended grip length of the P365X/XL. 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.
Features:
- 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 11,408,697 B2 and US 11,168,954 B1
Specifications:
- Color: Black
- Magazine Capacity: 3 Round
- Gun Make: SIG Sauer
- Gun Model: SIG Sauer P365



