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Sig Sauer M18 (P320 Carry) - 3.9" 9mm


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Sig Sauer M18 (P320 Carry), 9mm, 3.9" BBL, 17rd/21rd


This is the new Sig Sauer M18. It is similar to the M17, but in a P320 Carry format with the 3.9" barrel vs. the 4.7" barrel on the M17. It includes the Coyote colored grip module, (1) 17rd Magazine, and (2) 21rd Magazines.

Additional Information

SKU W320CA-9-M18-MS
UPC Code 798681607532
Caliber 9mm
Manufacturer Sig Sauer
Trigger Pull SA No
Trigger Pull (DA) No
Overall Length No
Overall Height No
Overall Width No
Sights (detailed) Night Sights, Optics Ready
Sight Radius No
Weight Empty No
Grips Polymer
Frame Finish Coyote
Frame Material No
Slide Finish No
Stock Material No
Barrel Length (in) 3.9 in.
Rifling No
Number of Grooves No
Mag Capacity / Rounds 21rd
Number of Mags 3
Sound Reduction No
Accessory Rail Yes
Features Includes (1) 17-Round Magazine and (2) 21-Round Extended Magazines
Safety (detailed) No
Competition Approval No
Magazine Well No
Additional Info No
Bullet Type No
FFL Requirements All firearms must be shipped to a Federal Firearms License (FFL) holder. We cannot and will not ship firearms to anyone but a FFL. We must receive the receiving dealer's FFL by fax (314-558-8429) or email ([email protected]).
Warranty Warranty provided by product manufacturer.

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Customer Reviews

  • Working With Osage Is Easy
    Review by Howardon 3/10/2020
    My purchase experience with Osage County Guns was smooth as usual. They have great communication set up and all was done quickly and without problem. I do want to make a comment about the Sig Sauer P320 M18, which I think also applies to the other P320 models. During reassembly after field stripping, the spring assembly must be oriented a specific way because the plate the buts up against the barrel is not round. The gun will not reassemble properly without the proper orientation which is flat surfaces facing vertical. Second, if the slide assembly is reinstalled without the release lever all the way over, the trigger will not reset properly and a magazine cannot be inserted. The fix for this is to move the lever all the way over and then push up on the slide release. The trigger will then reset. I have never had this happen on any of my other guns but just wanted to pass this "feature" on to all of you.
  • Great Purchase experience
    Review by Steveon 2/16/2020
    Wow, great gun, great prices and quick response from Osage County Guns. As soon as I pressed purchase we had responses from a human. Best experience purchasing online! They kept me informed on when to expect shipping and then when it was shipped and delivered to the FFL. Great having a place where humans interact with the customer. The M-18 fits perfect in my hand and looks great.