Warne MESIG54GR Magazine Extension 9mm Luger +5 Rd for Sig P320 Magazines - Gray

The Warne MESIG54GR magazine extension is a purpose-built +5 round basepad add-on engineered specifically for Sig Sauer P320 9mm Luger pistol magazines. Designed to drop onto the factory P320 17-round 9mm magazine baseplate, this extension brings total capacity up to 22 rounds while preserving reliable feeding. The extension is machined from 6061-T6 aluminum and finished in a low-glare, wear-resistant hardcoat anodized gray coating that stands up to regular carry, range use, and the holster scuffs that come with both.

Function gets as much attention as form. The MESIG54GR features an ergonomic shape with finger grooves that improve positive purchase during magazine insertion and, just as importantly, give the user a solid grip to strip a stubborn magazine free of the pistol grip during administrative handling or malfunction clearing. The hardcoat anodized finish resists corrosion and wear, and the aluminum body keeps the extension lightweight so it does not meaningfully change the balance of the pistol. This is the gray finish variant; Warne also offers the same extension in other finishes.

Note: Magazine extension only. Sig P320 magazine is not included. Designed for use with factory Sig Sauer P320 17-round 9mm Luger magazines.