M18 9MM (1) 17RD (2) 21RD MAG CAL-X KIT

Everything you need to convert your P320 to the U.S. Marine Corps' new M18 in a civilian version. Now ROMEO-M17 Red Dot Optic Compatible.

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In Stock
Price $549.99
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This complete caliber X-CHANGE kit allows you to convert your manual safety 9mm P320 to the civilian version of the U.S Marine Corps' M18, featuring the ability to mount the ROMEO-M17 reflex sight.

Learn more about READY FOR DUTY

The SIG SAUER M18 is the official sidearm of all branches of the U.S. Military and the official sidearm of the U.S. Marine Corps. The commercial M18 brings the same unprecedented accuracy, extreme reliability and unmatched durability the military demands.

This kit includes:

  • (1) 17-round magazine and two (2) 21-round magazines.
  • Full-size 3.9" Coyote-tan PVD coated stainless steel slide.
  • SIG-LOC MHS footprint capable of accepting the ROMEO-M17 Red Dot Optics. (optic not included)
  • Equipped with a SIGLITE front night sight and a removable Night Sight rear plate.
  • Coyote-tan carry-length grip module.
  • 3.9" Barrel and recoil spring assembly.

Note: This grip module is designed to accommodate manual safety Fire Control Units (FCU). 

Optic not included.

Learn more about SIG SAUER conversion kits for the P365 & P320.

M18 MUST-HAVES

Specifications

SKU CALX-M18-CSS-MS
Model P320, M18
Category Conversion Kits
Color Coyote Tan
Accessory Rail M1913
Caliber 9mm Luger
Mags Included (1) 17rd / (2) 21rd Steel Mags
Magazine Material Aluminum
Barrel Included Yes
Barrel Length 3.9 in [99.06 mm]
Threaded Barrel No
Recoil Assembly Included Yes
Pistol Size Carry
Sights SIGLITE Night Sights
Optic Ready Yes
Grip Color Coyote Tan
Manual Safety Yes
Grip Material Standard Polymer
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