Sig Sauer P320 M18 9mm 3.9" Barrel Coyote Tan Pistol + 3 Magazines

Sig Sauer P320 M18 9mm Coyote Tan Pistol

The Sig Sauer P320 M18 was recently issued to all branches of the U.S. Military and was chosen as the official sidearm of the U.S. Marine Corps. This commercial version brings the same unprecedented accuracy, extreme reliability, and unmatched durability the military demands, now available to civilian shooters for the first time.

• Manufacturer: Sig Sauer
• Model: P320 M18
• Manufacturer Part Number: 320CA-9-M18-MS
• UPC: 798681607556
• Caliber: 9mm
• Action: Semi-automatic
• Type: Striker fired
• Size: Carry
• Barrel Length: 3.9 inches
• Color: Coyote Tan
• Capacity: 21 rounds
• Magazines Included: 1, 17 round and 2, 21 round
• Safety: Manual thumb safety
• Sights: SIGLITE night sights, removable night sight rear plate
• Material: Polymer frame

The slide is optics ready and directly compatible with the Romeo1PRO, giving shooters an easy path to adding a red dot. With its military pedigree and proven feature set, the P320 M18 offers civilian shooters the chance to own the same pistol trusted by U.S. service members.

Military Proven Design

The P320 M18 is not a civilian reinterpretation of a military pistol but a direct commercial counterpart to the sidearm carried by U.S. Military personnel and the U.S. Marine Corps. This means the same standards of accuracy, reliability, and durability that led to its military adoption carry over directly into this version. 

The slide and grip module are finished in the same coyote tan as the issued military pistol, giving owners an authentic look and feel alongside genuine military grade performance.

Sights and Optics Compatibility

Standard SIGLITE night sights come equipped on the P320 M18, providing reliable target acquisition in low light conditions right out of the box. 

A removable night sight rear plate allows shooters to swap in a red dot optic without sacrificing a usable sighting system, since the slide is optics ready and directly compatible with the Romeo1PRO. This combination gives shooters the flexibility to run the pistol with iron sights alone or to add an optic as their needs and preferences evolve.

Sig Sauer P320 M18 Capacity and Included Accessories

The P320 M18 ships with three magazines, including one 17 round magazine and two 21 round magazines, giving shooters flexibility between a more compact carry option and maximum capacity when needed. 

The polymer frame keeps the pistol lightweight without compromising durability, while the manual thumb safety adds an additional layer of control for shooters who prefer that feature on a striker fired pistol. Striker fired for a consistent trigger pull shot after shot, the P320 M18 combines proven military design with practical features suited for personal defense, range use, or duty carry. 

For shooters who want a pistol with genuine military credentials and modern optics compatibility, the P320 M18 delivers a rare opportunity to own the same sidearm chosen by the U.S. Marine Corps and U.S. Military.