When selecting a duty or home-defense sidearm, reliability, control, and sighting options top the list. A compact, optics-ready pistol that ships with multiple magazines and pre-installed night sights gives you immediate capability for low-light and defensive scenarios without waiting for aftermarket work.
SIG SAUER P320 M18 is optics ready and arrives certified used with two 21-round magazines, one 17-round magazine, the original case, and the owner’s manual. It features an ambidextrous safety and an ambidextrous slide release, and it’s equipped with night sights — a practical package for defensive-minded shooters who want a service-oriented pistol at a value price. 
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Key features and tactical advantages
The SIG SAUER P320 M18’s optics-ready slide allows quick mounting of a red-dot sight for faster target acquisition and reduced sight picture clutter in stressful encounters. Night sights are installed for immediate low-light capability. Ambidextrous controls—both safety and slide release—make the platform well suited for left- or right-handed shooters and for dynamic reholstering or weapon manipulation in training.
Included magazines—two 21-round and one 17-round—provide flexibility between duty-capacity carry and a slightly more compact loadout. Receiving the gun as a Certified Used Firearm means it has been inspected to a high standard and sold in very good to excellent condition with a ‘no questions asked’ return policy. At a price of $379.99, this represents a strong value for an optics-ready, service-configured pistol.
View product details and pricing to confirm current inventory and the Certified Used guarantee.
Fit, handling, and recommended use
Built on the P320 platform, the pistol benefits from a proven fire-control design and modular ergonomics. The ambidextrous controls and night sights make it suitable for home defense, duty carry, or range training. The optics-ready capability allows owners to tailor sighting systems to mission needs without modifying the slide themselves.
For a service-capable, optics-ready pistol packaged with multiple magazines, night sights, and ambidextrous controls at an attractive certified used price, check current availability and purchase options on our shop page: Check availability.
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People Also Ask
What makes this product stand out from competitors?
This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.
Is this product suitable for beginners?
Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.
What warranty or support is available?
The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.
How does this compare to similar products in its price range?
This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.
What maintenance is required?
Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.
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