Sig sauer proforce m17 spare gas magazine

Compatibility & Capacity

• Designed specifically for the SIG Air / VFC ProForce P320 M17/M18 GBB pistols, fully aligning with both green gas and CO₂ models

• Holds 21 rounds of 6 mm BBs plus chamber-ready capacity, matching the original pistol mag

Build & Construction

• Comes in two variants:

  • Green Gas version: full metal body with polymer baseplate, sealed for reliable play.

  • CO₂ version: metal body, polymer base, built-in pierce and Allen key lock for cartridge installation

• OEM-quality construction with precisely cast logos and finish to match the ProForce pistol.

Reliability & Performance

• Generally smooth feeding,

  Comparable to real-steel dimensions - well-regarded in field reports:

• Safe pressure handling and leak protection reported in multiple green gas & CO₂ mags used over thousands of rounds

If you need a reliable spare magazine for your SIG ProForce M17/M18, these OEM mags are a solid match - featuring perfect fit, smooth performance, and options for green gas or CO₂. Just handle feed lips with care and follow proper spring/CO₂ install techniques.