This Warne magazine extension (mfr. part no. 3214) adds 5 rounds of 9mm Luger capacity to a Sig P320 magazine, finished in gray.

Key Specifications

• Adds 5 rounds of 9mm Luger capacity.
• Fits the Sig P320.
• Finished in gray.
• Includes finger grooves for easier magazine stripping.
• Ergonomic shape aids reliable insertion.
• Ships as a bolt-on extension, not a standalone magazine.
• Manufactured by Warne.
• Weighs approximately 0.11 lb.
• Retail packaging measures approximately 3.1 x 1.2 inches.

Frequently Asked Questions

How is this different from the FDE version Warne sells?

It’s the same +5 9mm extension for the Sig P320, just finished in gray instead of flat dark earth.

Does this extension replace the whole magazine?

No, it bolts onto your existing Sig P320 magazine to add 5 rounds of capacity.

Buy the Warne Sig P320 +5 Extension – Gray

Shop the Warne lineup or browse our full Magazine Accessories selection to find the right fit for your firearm.