---
title: "Sig Sauer M18 9mm Threaded Barrel, 3.9 in., 17rd, Black"
description: "$898.90 at Keystone Shooting Supply, 13% above usual."
type: "product"
category: "guns"
brand: "Sig Sauer"
landed_price: 898.9
currency: "USD"
best_store: "Keystone Shooting Supply"
deal_signal: "higher"
usual_price: 797.96
updated: "2026-10-19T14:51:00.000Z"
url: "https://trigger.deals/p/sig-sauer-m18-9mm-threaded-barrel-39-in-17rd-black-afi"
site: "Trigger Deals"
data: "sample"
---

# Sig Sauer M18 9mm Threaded Barrel, 3.9 in., 17rd, Black

> Lowest landed price: **$898.90** at Keystone Shooting Supply (★ 4.8, 24,471 reviews). 13% above usual (usual $797.96, the 90-day median). Only 3 left, verified 2026-10-19 14:51 UTC.

- Item price $878.95 + $19.95 shipping to your FFL dealer. Landed price excludes sales tax and the dealer's transfer fee.
- 90-day range: $650.36 to $898.90
- 2-year low: $645.62 (Mar 9, 2025)
- Price unchanged for 5 days (since 2026-10-15 10:11 UTC)
- MSRP: $916.88 (2% off)
- Brand: Sig Sauer. Category: guns.
- [Buy at Keystone Shooting Supply](https://trigger.deals/go/sig-sauer-m18-9mm-threaded-barrel-39-in-17rd-black-afi?store=keystone-shooting)

## Compare stores (4)

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 | $898.90 | Best price | $878.95 | $19.95 | Only 3 left | 2026-10-19 14:51 UTC |
| Black Canyon Arms | ★ 4.3 | $908.99 | +$10.09 | $893.99 | $15.00 | Stock not reported | 2026-10-19 14:16 UTC |
| High Desert Guns | ★ 4.2 | $925.95 | +$27.05 | $900.95 | $25.00 | Stock not reported | 2026-10-19 13:20 UTC |
| Ridgeline Arms | ★ 4.8 | $975.94 | +$77.04 | $955.95 | $19.99 | In stock | 2026-10-19 14:22 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-threaded-barrel-39-in-17rd-black-afi?days=730)).

| Date | Lowest landed price |
| --- | --- |
| Jul 27, 2026 | $810.73 |
| Aug 3, 2026 | $650.36 |
| Aug 10, 2026 | $837.38 |
| Aug 17, 2026 | $775.13 |
| Aug 24, 2026 | $729.13 |
| Aug 31, 2026 | $813.82 |
| Sep 7, 2026 | $793.97 |
| Sep 14, 2026 | $799.47 |
| Sep 21, 2026 | $824.98 |
| Sep 28, 2026 | $824.98 |
| Oct 5, 2026 | $681.89 |
| Oct 12, 2026 | $712.06 |
| Oct 19, 2026 | $898.90 |

## About this product

The Sig Sauer M18 9mm Threaded Barrel 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 threaded barrel configuration, new. 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 | Threaded barrel |
| Condition | New |

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