Sig Sauer P320-M18 9mm Carry – Coyote PVD, ROMEO1 PRO Installed, Wilson Combat Grip, 3.9 in Barrel, 21+1
This Sig Sauer P320-M18 stands out with a Wilson Combat P320 grip module, a factory SIG Sauer ROMEO1 PRO red dot installed, and a flat-faced skeletonized trigger. It retains the M18 features buyers look for, including an ambidextrous manual thumb safety, a coyote PVD slide, and an M18-prefix serialized FCU visible through the window. It comes with two 21-round magazines and one 17-round magazine for a 21+1 maximum capacity.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There is mild wear and a few scratches.
What’s Included
- SIG Sauer ROMEO1 PRO red dot sight (installed)
- SIG Sauer factory hard case
- Wilson Combat P320 polymer grip module with Starburst texture (installed)
- 2x 21-round steel magazines with witness holes (bodies stamped "MADE IN ITALY")
- 1x 17-round steel magazine with witness holes (body stamped "MADE IN ITALY")
The P320-M18 Carry pairs a 3.9-inch barrel with a striker-fired action and an ambidextrous manual thumb safety. The M18-prefix serialized FCU is visible through the window, confirming its M18 lineage.
The coyote PVD slide features front and rear cocking serrations and an optic cut for the ROMEO1 PRO/DeltaPoint Pro footprint. The rear sight plate has been removed for the installed optic, while the front sight retains a clear dot insert. The ROMEO1 PRO delivers a 1x aiming solution that is already mounted and ready to use.
The Wilson Combat P320 grip module adds Starburst texture and a beavertail for a secure, controllable hold. A flat-faced, skeletonized trigger complements the setup with a straight, consistent pull.
A 4-slot Picatinny/1913 rail on the dust cover supports lights or accessories. This pistol includes two 21-round magazines and one 17-round magazine, with bodies stamped "MADE IN ITALY," enabling a maximum capacity of 21+1.

