+3 Magazine Extension for Sig Sauer P320


Introducing the IMI Defense Sig Sauer +3 Magazine Extension, meticulously engineered to elevate your Sig Sauer P320 with an additional three rounds of firepower. Compatible with both 9mm and 40 S&W magazines.  This +3 extension works with compact, standard, or extended length magazines seamlessly to integrate into your firearm for enhanced capacity without compromising performance.

Crafted from lightweight yet durable reinforced polymer, the IMI Defense +3 Magazine Extension ensures exceptional quality and durability, providing reliability in any shooting scenario. With a straightforward installation process, simply replace the standard magazine base plate with the IMI Defense extension and the included spring insert plate — no need to replace the spring.

Experience improved grip and control during shooting sessions, thanks to the extension’s side and front tactile texture designed for eliminate slipping when stripping magazines from your firearm. Compatible with various Grip Modules, including AXG, X5 LEGION, XFULL, XCARRY, and XCOMPACT, as well as Nitrone grip modules, this extension offers versatility to suit your preferences and shooting style.

Upgrade your Sig Sauer P320 with the IMI Defense +3 Magazine Extension and unlock greater capacity, reliability, and performance for your firearm.

SKU: IMI-P320P3 Categories: ,



  • Space grade polymer
  • Extreme Impact Resistance
  • resistant to harsh chemicals
  • heat, cold and UV resistance
  • Fits AXG, X5 LEGION, XFULL, XCARRY, and XCOMPACT, and nitrone grip modules
  • Adding 3 additional rounds
  • Compatible with sig Sauer metal magazines
  • Available in Black, O.D. Green and Desert Tan
  • Made in Israel

Additional information

Weight 30 g
Dimensions 4.6 × 3.28 × 2.19 cm

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