---
title: "Sig Sauer M18 9mm, 3.9 in., 17rd, Black (Used)"
description: "$500.94 at Keystone Shooting Supply, about usual."
type: "product"
category: "guns"
brand: "Sig Sauer"
landed_price: 500.94
currency: "USD"
best_store: "Keystone Shooting Supply"
deal_signal: "about"
usual_price: 488.39
updated: "2026-10-19T14:28:00.000Z"
url: "https://trigger.deals/p/sig-sauer-m18-9mm-39-in-17rd-black-used-afo"
site: "Trigger Deals"
data: "sample"
---

# Sig Sauer M18 9mm, 3.9 in., 17rd, Black (Used)

> Lowest landed price: **$500.94** at Keystone Shooting Supply (★ 4.8, 24,471 reviews). About usual (usual $488.39, the 90-day median). In stock, verified 2026-10-19 14:28 UTC.

- Item price $480.99 + $19.95 shipping to your FFL dealer. Landed price excludes sales tax and the dealer's transfer fee.
- 90-day range: $418.27 to $551.67
- 2-year low: $401.85 (Sep 22, 2025)
- Price unchanged for 3 days (since 2026-10-17 02:36 UTC)
- MSRP: $799.49 (37% off)
- Brand: Sig Sauer. Category: guns.
- [Buy at Keystone Shooting Supply](https://trigger.deals/go/sig-sauer-m18-9mm-39-in-17rd-black-used-afo?store=keystone-shooting)

## Compare stores (6)

Ranked by landed price: the item plus shipping to you, before tax.

| Store | Rating | Landed price | Versus best | Item price | Shipping | Stock | Verified |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Keystone Shooting Supply (best) | ★ 4.8 | $500.94 | Best price | $480.99 | $19.95 | In stock | 2026-10-19 14:28 UTC |
| Ridgeline Arms | ★ 4.8 | $521.94 | +$21.00 | $501.95 | $19.99 | In stock | 2026-10-19 12:51 UTC |
| Summit Tactical | ★ 4.6 | $539.94 | +$39.00 | $519.95 | $19.99 | In stock | 2026-10-19 13:34 UTC |
| Timber Ridge Sporting | ★ 4.6 | $542.98 | +$42.04 | $512.99 | $29.99 | In stock | 2026-10-19 14:31 UTC |
| Westbound Armory | ★ 4.7 | $562.98 | +$62.04 | $542.99 | $19.99 | In stock | 2026-10-19 14:08 UTC |
| High Desert Guns | ★ 4.2 | $508.99 | – | $483.99 | $25.00 | Out of stock | 2026-10-19 13:33 UTC |

## Price history

Lowest landed price across stores, weekly over the last 90 days (full daily history: [JSON API](https://trigger.deals/api/v1/products/sig-sauer-m18-9mm-39-in-17rd-black-used-afo?days=730)).

| Date | Lowest landed price |
| --- | --- |
| Jul 27, 2026 | $482.31 |
| Aug 3, 2026 | $450.09 |
| Aug 10, 2026 | $488.41 |
| Aug 17, 2026 | $551.67 |
| Aug 24, 2026 | $457.02 |
| Aug 31, 2026 | $507.23 |
| Sep 7, 2026 | $418.27 |
| Sep 14, 2026 | $418.27 |
| Sep 21, 2026 | $418.27 |
| Sep 28, 2026 | $483.91 |
| Oct 5, 2026 | $488.39 |
| Oct 12, 2026 | $488.39 |
| Oct 19, 2026 | $500.94 |

## About this product

The Sig Sauer M18 9mm is a handgun chambered in 9mm Luger, with a striker-fired action, a 3.9-inch barrel and a 17-round capacity. This listing is the black finish in the standard configuration, used. Guns ship to a licensed dealer (FFL) near you, who runs the background check and hands it over; their transfer fee is separate.

## Specs

| Spec | Value |
| --- | --- |
| Caliber | 9mm Luger |
| Type | Handgun |
| Action | Striker-fired |
| Capacity | 17 rounds |
| Barrel length | 3.9 in. |
| Finish | Black |
| Configuration | Standard |
| Condition | Used |

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