How much is a SIG Sauer M18?

The average asked price for a used SIG Sauer M18 is $610. GunList found 18 current pre-owned listings; customized, collectible, trade-only, accessory-heavy, and unusually priced listings are filtered before the median is calculated. Pricing data was last updated in October 2026.

There are not currently enough new SIG Sauer M18 listings to calculate a reliable average asking price. New-in-box condition, generation, and factory configuration can also affect the price.

Based on the filtered used SIG Sauer M18 median, consider $490 to attract buyers faster, $610 for a balanced asking price, or $765 if you are willing to wait. These options are 20% below, equal to, and 25% above the filtered market median.

Comparable used SIG Sauer M18 asking prices range from $425 to $800 after customized, collectible, trade-only, and statistical outliers are filtered. Accessory-heavy listings are also removed when enough comparable data remains.

GunList analyzes marketplace listings explicitly linked to the SIG Sauer M18. When fewer than five current priced listings are available, archived and sold listings are also included. Zero-price, customized, collectible, and trade-only listings are excluded. Accessory-heavy bundles are removed when enough comparable listings remain, then unusually low and high prices are filtered. The reported used value is the median asking price, not a completed-sale price or formal appraisal.

Yes. Among states with SIG Sauer M18 data, average asking prices range from $425 in Tennessee to $1,000 in Michigan. Availability, local demand, and small sample sizes can cause regional differences.

A SIG Sauer M18's value can change with condition, generation, finish, round count, factory configuration, modifications, included optics or magazines, original box and paperwork, provenance, and local demand. Customized or accessory-heavy examples may sell outside the comparable price range shown here.