SIG Sauer P320-M18 Compact 9mm Luger, 3.9 in Barrel, Coyote PVD, Night Sights, 21+1, Two Magazines
This SIG Sauer P320-M18 is the commercial counterpart to the U.S. military M18 configuration, combining a compact 3.9 in barrel with a modular, removable stainless-steel FCU. It wears a coyote PVD slide over a coyote tan polymer frame and comes equipped with night sights and ambidextrous controls. This example includes one 21-round and one 17-round magazine, a factory case, and original paperwork, with factory model code 320CA-9-M18-MS.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Details: There are minor scratches and blemishes visible from prior handling.
What’s Included
- SIG Sauer factory hard case
- SIG Sauer owner's manual and paperwork
- 1x 21-round factory P320 steel magazine with extended basepad (marked "Made in Italy")
- 1x 17-round factory P320 steel magazine
The P320-M18 format delivers the M18-style compact package with a removable, serialized stainless-steel fire control unit for easy modularity. The frame is marked NEWINGTON, NH, USA, and the pistol is made in the USA. The factory case label lists model code 320CA-9-M18-MS with a print date of July 7, 2022.
Controls are fully ambidextrous where applicable, including an ambidextrous manual thumb safety and ambidextrous slide catch/release, with a reversible magazine release to accommodate left- or right-handed shooters. The striker-fired system uses a curved trigger.
Sight configuration consists of a SIGLITE night sight up front and a rear night-sight plate assembly. The coyote PVD-finished slide features front and rear serrations for positive manipulation, matched to a coyote tan polymer grip module.
The 3.9 in carbon-steel barrel uses a 1:10 RH twist. A four-slot M1913/Picatinny accessory rail is integrated into the dustcover for light or laser attachment. Capacity is 21+1 with the extended magazine, and this pistol ships with both 21-round and 17-round factory steel magazines.