Convert your Sig Sauer P365 12-round magazines into 15-round capacity with the MTX 365 +3 Extender. 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.
Features:
- 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 11,408,697 B2 and US 11,168,954 B1
Specifications:
- Color: Black
- Caliber: 9mm Luger
- Gun Make: SIG Sauer
- Gun Model: SIG Sauer P365



