Save $192.92

Sig Sauer M18 9mm with Holosun 507K, 3.9 in., 17rd, Armor Black Cerakote
- 9mm
- 17rd
- 3.9 in.
- Striker-fired
- 18% below usual
- Lowest in 90 days
Save $166.49
Lower than usual: it usually sells for $916.47, its median price over the last 90 days.
$729.99 + $19.99 shipping to your FFL dealer, before tax and the transfer fee. 33% under MSRP.
Ridgeline Arms
Lowest of 4 stores4.8 (18.2K), in stock,
Compare 6 stores
4 in stock.
Ranked by landed price: the item plus shipping to you, before tax.
| Store | Landed price | Versus best | Stock | Store link |
|---|---|---|---|---|
Ridgeline Arms4.8 4.8(18.2K)store rating | $749.98 | Best price | In stock | Buy at Ridgeline Arms (opens in a new tab) |
Bayou Arms Co.4.1 4.1(1.7K)store rating | $750.98 | +$1.00 | Not reported | Buy at Bayou Arms Co. (opens in a new tab) |
Westbound Armory4.7 4.7(4.6K)store rating | $794.98 | +$45.00 | In stock | Buy at Westbound Armory (opens in a new tab) |
Keystone Shooting Supply4.8 4.8(24.5K)store rating | $806.94 | +$56.96 | In stock | Buy at Keystone Shooting Supply (opens in a new tab) |
Sawtooth Outfitters4.5 4.5(3.9K)store rating | $690.49 | Not available | Out of stock | View at Sawtooth Outfitters (opens in a new tab) |
Lone Pine Outfitters4.5 4.5(9.8K)store rating | $839.98 | Not available | Out of stock | View at Lone Pine Outfitters (opens in a new tab) |
Guns ship to a licensed dealer (FFL) near you for pickup. Landed prices include shipping to the dealer, not their transfer fee.
Price history
The lowest price and each store's own, every day for 2 years.
- Usual
- $916.47
- 90-day median
- 90-day low
- $749.98
- Today's price
- 90-day high
- $960.43
- 2-year low
- $667.19
- Dec 22, 2024
- Unchanged for
- 6 days
- Since Oct 14, 2026
Every price change (117 in 2 years)
| Date | Lowest price | Change |
|---|---|---|
| Oct 14, 2026 | $749.98 | Down 8.0% |
| Oct 7, 2026 | $815.14 | Up 3.3% |
| Oct 6, 2026 | $789.00 | Down 14.7% |
| Sep 30, 2026 | $924.88 | Up 0.8% |
| Sep 24, 2026 | $917.95 | Up 3.4% |
| Sep 23, 2026 | $887.66 | Down 0.7% |
| Sep 22, 2026 | $893.72 | Down 6.9% |
| Sep 14, 2026 | $960.43 | Up 3.9% |
| Sep 9, 2026 | $924.07 | Up 14.1% |
| Sep 6, 2026 | $810.06 | Down 12.0% |
| Aug 27, 2026 | $920.72 | Up 0.5% |
| Aug 15, 2026 | $916.47 | Up 4.8% |
| Aug 4, 2026 | $874.42 | Up 16.6% |
| Jul 27, 2026 | $750.12 | Down 17.4% |
| Jul 25, 2026 | $907.95 | Down 0.1% |
| Jul 17, 2026 | $909.09 | Up 2.0% |
| Jul 13, 2026 | $891.28 | Up 7.6% |
| Jul 6, 2026 | $828.52 | Down 8.6% |
| Jul 4, 2026 | $906.89 | Down 3.3% |
| Jul 2, 2026 | $937.48 | Up 3.3% |
| Jun 26, 2026 | $907.72 | Up 2.0% |
| Jun 15, 2026 | $889.88 | Down 0.7% |
| Jun 14, 2026 | $896.41 | Down 1.2% |
| Jun 13, 2026 | $907.42 | Down 2.9% |
| Jun 11, 2026 | $934.12 | Up 7.2% |
| Jun 9, 2026 | $871.70 | Up 18.0% |
| May 30, 2026 | $738.67 | Down 18.6% |
| May 25, 2026 | $907.27 | Down 2.3% |
| May 3, 2026 | $928.56 | Down 6.0% |
| Apr 26, 2026 | $988.02 | Down 0.7% |
| Apr 23, 2026 | $994.97 | Up 15.0% |
| Apr 21, 2026 | $864.98 | Down 15.7% |
| Apr 18, 2026 | $1,025.53 | Up 31.1% |
| Apr 12, 2026 | $782.51 | Down 14.9% |
| Apr 7, 2026 | $919.64 | Up 3.5% |
| Apr 2, 2026 | $888.86 | Down 4.0% |
| Mar 25, 2026 | $926.18 | Up 6.6% |
| Mar 17, 2026 | $869.13 | Down 4.7% |
| Mar 12, 2026 | $911.61 | Up 1.0% |
| Mar 5, 2026 | $902.81 | Up 3.2% |
| Feb 24, 2026 | $874.45 | Up 9.2% |
| Feb 20, 2026 | $800.78 | Down 8.4% |
| Feb 15, 2026 | $873.75 | Up 21.9% |
| Feb 13, 2026 | $716.58 | Down 19.4% |
| Feb 8, 2026 | $889.45 | Up 1.1% |
| Feb 7, 2026 | $879.77 | Up 1.3% |
| Feb 6, 2026 | $868.46 | Up 18.2% |
| Jan 27, 2026 | $734.91 | Down 18.6% |
| Jan 22, 2026 | $903.07 | Up 4.5% |
| Jan 20, 2026 | $863.90 | Down 14.0% |
| Jan 19, 2026 | $1,005.07 | Up 12.2% |
| Jan 14, 2026 | $895.79 | Up 5.3% |
| Jan 7, 2026 | $850.92 | Down 0.4% |
| Dec 28, 2025 | $854.71 | Down 0.1% |
| Dec 25, 2025 | $855.75 | Up 21.4% |
| Dec 24, 2025 | $705.14 | Down 13.2% |
| Dec 10, 2025 | $812.56 | Up 11.4% |
| Dec 6, 2025 | $729.47 | Down 13.6% |
| Nov 8, 2025 | $843.95 | Down 3.4% |
| Nov 7, 2025 | $873.61 | Up 2.6% |
| Nov 1, 2025 | $851.77 | Up 6.0% |
| Oct 24, 2025 | $803.81 | Down 4.8% |
| Oct 4, 2025 | $843.95 | Down 1.5% |
| Sep 30, 2025 | $856.88 | Up 19.3% |
| Sep 25, 2025 | $718.13 | Down 6.0% |
| Sep 23, 2025 | $764.29 | Down 0.6% |
| Sep 21, 2025 | $769.19 | Down 13.5% |
| Sep 19, 2025 | $889.16 | Up 5.3% |
| Sep 3, 2025 | $844.56 | Down 1.9% |
| Aug 30, 2025 | $860.90 | Up 1.7% |
| Aug 17, 2025 | $846.44 | Up 2.4% |
| Aug 12, 2025 | $826.85 | Up 2.0% |
| Jul 23, 2025 | $810.34 | Up 16.6% |
| Jul 21, 2025 | $694.75 | Down 14.1% |
| Jul 20, 2025 | $808.64 | Down 0.5% |
| Jul 7, 2025 | $813.08 | Up 16.9% |
| Jul 6, 2025 | $695.55 | Up 3.1% |
| Jul 1, 2025 | $674.42 | Down 14.6% |
| Jun 25, 2025 | $789.26 | Down 5.2% |
| Jun 24, 2025 | $832.58 | Up 23.2% |
| Jun 15, 2025 | $675.97 | Down 18.7% |
| Jun 14, 2025 | $831.17 | Down 0.6% |
| Jun 13, 2025 | $836.55 | Up 0.7% |
| Jun 4, 2025 | $830.99 | Down 11.2% |
| Jun 3, 2025 | $935.30 | Up 15.1% |
| May 23, 2025 | $812.58 | Down 0.3% |
| May 14, 2025 | $814.92 | Down 5.7% |
| May 5, 2025 | $864.10 | Down 1.8% |
| Apr 30, 2025 | $880.22 | Up 2.7% |
| Apr 22, 2025 | $857.48 | Up 12.0% |
| Apr 21, 2025 | $765.88 | Down 7.6% |
| Apr 8, 2025 | $829.13 | Up 19.6% |
| Apr 7, 2025 | $693.42 | Down 13.2% |
| Apr 3, 2025 | $798.47 | Up 18.7% |
| Mar 19, 2025 | $672.89 | Down 24.2% |
| Mar 13, 2025 | $887.44 | Up 4.1% |
| Mar 7, 2025 | $852.78 | Up 7.9% |
| Mar 6, 2025 | $790.20 | Down 2.2% |
| Mar 2, 2025 | $808.01 | Down 1.1% |
| Mar 1, 2025 | $816.84 | Up 22.0% |
| Feb 23, 2025 | $669.49 | Down 1.2% |
| Feb 19, 2025 | $677.31 | Down 14.7% |
| Feb 17, 2025 | $794.32 | Down 2.8% |
| Jan 30, 2025 | $817.62 | Up 2.6% |
| Jan 24, 2025 | $797.23 | Up 14.9% |
| Jan 19, 2025 | $694.14 | Down 11.6% |
| Dec 29, 2024 | $785.58 | Up 8.9% |
| Dec 25, 2024 | $721.49 | Down 12.6% |
| Dec 23, 2024 | $825.28 | Up 23.7% |
| Dec 20, 2024 | $667.19 | Down 0.1% |
| Dec 11, 2024 | $667.84 | Down 19.2% |
| Dec 8, 2024 | $826.75 | Up 4.7% |
| Nov 28, 2024 | $789.78 | Up 1.6% |
| Nov 13, 2024 | $777.00 | Down 11.7% |
| Nov 12, 2024 | $879.53 | Up 11.1% |
| Nov 3, 2024 | $791.72 | Down 0.6% |
| Oct 30, 2024 | $796.10 | Up 6.0% |
About this product
The Sig Sauer M18 9mm with Holosun 507K 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 armor Black Cerakote finish in the with red dot 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.
- Caliber
- 9mm Luger
- Type
- Handgun
- Action
- Striker-fired
- Capacity
- 17 rounds
- Barrel length
- 3.9 in.
- Finish
- Armor Black Cerakote
- Configuration
- With red dot
- Condition
- New



