Description
Item Description
Bryant Ridge Co. is pleased to present this semi-automatic pistol for a penny-start auction, this is the Sig Sauer P320.
SPECIFICATIONS:
Manufacturer: Sig Sauer
Model: P320 M18
Serial: M18A184135
Caliber: 9mm
Finish: Black Nitron
Barrel Length: 3.9"
Optics/Sights: Fixed Front Post with Fixed U-Notch Rear
Stock/Grips: Textured Black Synthetic Grips with Sig Sauer Logos
Action: Semi-Automatic
Markings: Standard
Bryant Ridge's Analysis:
The Sig Sauer P320 M18 is a compact, military-derived semi-automatic pistol produced by SIG Sauer as the commercial counterpart to the sidearm adopted by the United States Marine Corps and other branches of the United States Armed Forces as part of the Modular Handgun System program. Chambered in 9×19mm, the M18 is based on the modular P320 platform and features a serialized stainless-steel fire control unit that can be removed from the grip module, allowing the pistol to be reconfigured with different frame sizes, slides, and calibers. The M18 uses a compact-length slide and barrel paired with a full-size or carry-size grip module, depending on configuration, striking an excellent balance between portability and shootability. One of its defining features is the coyote-tan finish used on the slide and frame, mirroring the military-issued model and giving it a distinct service appearance. The pistol uses a striker-fired system and offers a consistent trigger pull from shot to shot, while many M18 variants also include an ambidextrous manual thumb safety to meet military requirements. Standard magazine capacity is commonly 17 rounds, with extended 21-round magazines also widely available.
Model: P320 M18
Serial: M18A184135
Caliber: 9mm
Finish: Black Nitron
Barrel Length: 3.9"
Optics/Sights: Fixed Front Post with Fixed U-Notch Rear
Stock/Grips: Textured Black Synthetic Grips with Sig Sauer Logos
Action: Semi-Automatic
Markings: Standard
Bryant Ridge's Analysis:
The Sig Sauer P320 M18 is a compact, military-derived semi-automatic pistol produced by SIG Sauer as the commercial counterpart to the sidearm adopted by the United States Marine Corps and other branches of the United States Armed Forces as part of the Modular Handgun System program. Chambered in 9×19mm, the M18 is based on the modular P320 platform and features a serialized stainless-steel fire control unit that can be removed from the grip module, allowing the pistol to be reconfigured with different frame sizes, slides, and calibers. The M18 uses a compact-length slide and barrel paired with a full-size or carry-size grip module, depending on configuration, striking an excellent balance between portability and shootability. One of its defining features is the coyote-tan finish used on the slide and frame, mirroring the military-issued model and giving it a distinct service appearance. The pistol uses a striker-fired system and offers a consistent trigger pull from shot to shot, while many M18 variants also include an ambidextrous manual thumb safety to meet military requirements. Standard magazine capacity is commonly 17 rounds, with extended 21-round magazines also widely available.
The slide is factory cut for optics, allowing direct mounting of miniature red-dot sights, and the frame includes an accessory rail for lights or lasers. In practical use, the M18 is praised for its excellent ergonomics, controllable recoil, and adaptability, which have made the P320 series so popular among both professionals and civilians. Because it closely resembles the service pistol carried by American forces, it also holds strong appeal to collectors and enthusiasts of military small arms. Today, the Sig Sauer P320 M18 is regarded as one of the most successful modern combat-pistol variants, combining proven service heritage, modular design, and contemporary defensive features in a highly versatile package.
Return Policy:
We gladly offer a 3-day unfired inspection policy from the time that the firearm is delivered to your FFL. Refunds are available for all qualifying orders.
Return Policy:
We gladly offer a 3-day unfired inspection policy from the time that the firearm is delivered to your FFL. Refunds are available for all qualifying orders.
Shipping Details
Handgun Standard Shipping with Insurance $50.00
Long Gun Standard Shipping with Insurance $70.00
Any orders placed with magazines that are not compliant with your state, county, or city regulations will not ship with your order.
We strive to ship orders within the close of the following business day after payment and documentation is received.
Payment Details
We accept all forms of Payment including Personal Check, Business Check, PO Money Orders, Certified Check, Etc.
Please note we place a 7 business day hold on shipment, for all non-certified payments.
Payment MUST be received within 14 days.
Return Policy
We gladly offer a 3 day unfired inspection policy from the time that the firearm is delivered to your FFL. Refunds are available for all qualifying orders.
Additional Details
Our #1 priority is customer satisfaction. We want to build a lasting trust in the relationship with our customers, so that you will always look to us for all your firearms needs. If you have any issues with your transactions please contact us, and we will work with you to resolve any issues you may have. We greatly appreciate your trust in us and we look forward to fulfilling all your future firearm needs.
Bryant Ridge also reserves the right to cancel any sales that may occur while gunbroker.com is experiencing technical issues that affects the entire site or a complete site outage, within an hour of the auction ending.
We have an amazing inventory of classic and collector firearms that we are adding to Gunbroker daily. Stay up to date on all of our latest auction by adding us to your favorite sellers list.
About Us
From a small town hobby, to a leader in the investment and collector grade firearms industry. Bryant Ridge Firearms is here to offer the best in quality and customer service when you are looking to unload your collector grade firearm collection. 
Additional Information
GunbrokerLink: |
https://www.gunbroker.com/item/1171922906 |
BidPrice: |
0.01 |
AuctionEndDate: |
2026-05-10 21:00:00 |
CurrentBid: |
285 |
SoldOutTime: |
2026-05-10 17:19:18 |
