Description
SIG Sauer P320-M18 9mm MA Compliant Pistol, Coyote, 3.9" Barrel, 10-Round
The SIG M18 is the carry-size military P320. It is the shorter MHS P320: the same coyote military 9mm in a 3.9 in. carry slide.
The M18 uses the shorter slide, not the full-size M17. A factory ROMEO-M17 is installed only when this page says so. These pistols ship to a licensed FFL.
This configuration
SIG includes three 10-round steel magazines instead of the 17- and 21-round set. SIG lists this pistol for Connecticut, Hawaii, Illinois, Massachusetts, Maryland, and New Jersey. That listing is not a substitute for checking current local magazine rules before you order. The slide is optic-ready on SIG’s PRO footprint. SIG lists that cut as directly compatible with the ROMEO1PRO. A SIGLITE night sight sits up front, and the rear sight is a removable night sight plate. No red dot is installed. This PRO cut is not the M17/M18 MHS plate SIG lists for the ROMEO-M17.
What ships
A factory optic is installed only when this page says so. This item ships to a licensed FFL. See the SIG M18 collection.
Specifications and Included Items
- Model: 320CA-9-M18-MS-10
- Series: P320-M18
- Caliber: 9mm Luger
- Pistol size: Carry
- Barrel: 3.9 in. carbon steel; not threaded
- Overall length: 7.2 in.
- Overall width: 1.6 in.
- Height: 5.5 in.
- Sight radius: 5.8 in.
- Weight: 28.1 oz with magazine
- Slide: Stainless steel; coyote PVD finish
- Grip module: Carry polymer medium; coyote tan
- Sights: SIGLITE front night sight; removable night sight rear plate
- Optic-ready: Yes; SIG PRO footprint; SIG lists ROMEO1PRO compatibility; no optic installed
- Trigger: Striker-fired; standard curved trigger
- Manual safety: Ambidextrous
- Accessory rail: M1913
- Included magazines: (3) 10-round steel magazines
- SIG state listing: Connecticut, Hawaii, Illinois, Massachusetts, Maryland, New Jersey
- Loaded chamber indicator: Yes; visual and tactile indicator on the slide
- Transfer: FFL required
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