SIG Sauer P320 M17X 9mm Full-Size, 4.7 in, Coyote, ROMEO-M17 Red Dot, 21+1, Four 21-Round Mags
This SIG Sauer M17X brings the P320 platform into a full-size, optics-equipped configuration with a coyote-finished slide and frame. It features the P320 modular FCU architecture, an X-Series full-size grip module with a detachable flared magwell, and an ambidextrous manual thumb safety. An installed SIG Sauer ROMEO-M17 red dot (2 MOA dot with optional 32 MOA circle) and four 21-round factory magazines round out a well-equipped package.
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 Notes: There is some mild wear. Aside from a scratch on the left side of the slide, this gun is in great shape.
What’s Included
- SIG Sauer ROMEO-M17 red dot sight (installed)
- Four 21-round SIG Sauer extended steel magazines
- SIG Sauer factory hard case
- SIG Sauer owner's manual/literature
The M17X is a full-size 9mm in SIG's P320 series, built around the modular, serialized FCU. It uses a 4.7 in stainless steel barrel and a striker-fired action, paired with a flat-faced trigger and an ambidextrous manual thumb safety. The frame and slide are finished in coyote for a uniform, duty-style presentation.
The X-Series full-size grip module is medium-sized (backstrap marked "M") and adds user-focused geometry, including an extended beavertail and deep trigger-guard undercut. A detachable flared magwell supports faster reloads, and four factory 21-round extended steel magazines provide a 21+1 capacity.
The slide is cut for optics using SIG-LOC and is fitted with the SIG Sauer ROMEO-M17 red dot. The optic offers a red 2 MOA dot with an optional 32 MOA circle, and the pistol retains iron sights with a rear sight module.
Controls include ambidextrous slide-catch levers and an ambidextrous manual thumb safety. A MIL-STD-1913 accessory rail with three slots on the dust cover is ready for compatible lights or accessories. Markings include "MFR: 6ZWB1" and "PN: 13067008-1" on the slide, with the frame marked "NEWINGTON, NH, USA." Made in the USA.

