---
title: "Glock 21 Gen4 .45 with Holosun 507K, 4.61 in., 13rd, Armor Black Cerakote"
description: "$878.44 at Keystone Shooting Supply, about usual."
type: "product"
category: "guns"
brand: "Glock"
landed_price: 878.44
currency: "USD"
best_store: "Keystone Shooting Supply"
deal_signal: "about"
usual_price: 884.08
updated: "2026-10-19T16:29:00.000Z"
url: "https://trigger.deals/p/glock-21-gen4-45-with-holosun-507k-461-in-13rd-armor-black-cerakote-o85"
site: "Trigger Deals"
data: "sample"
---

# Glock 21 Gen4 .45 with Holosun 507K, 4.61 in., 13rd, Armor Black Cerakote

> Lowest landed price: **$878.44** at Keystone Shooting Supply (★ 4.8, 24,471 reviews). About usual (usual $884.08, the 90-day median). In stock, verified 2026-10-19 16:29 UTC.

- Item price $858.49 + $19.95 shipping to your FFL dealer. Landed price excludes sales tax and the dealer's transfer fee.
- 90-day range: $815.76 to $894.91
- 2-year low: $731.06 (Apr 3, 2026)
- Price unchanged for 6 days (since 2026-10-14 02:47 UTC)
- MSRP: $1,019 (14% off)
- Brand: Glock. Category: guns.
- [Buy at Keystone Shooting Supply](https://trigger.deals/go/glock-21-gen4-45-with-holosun-507k-461-in-13rd-armor-black-cerakote-o85?store=keystone-shooting)

## Compare stores (5)

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 | $878.44 | Best price | $858.49 | $19.95 | In stock | 2026-10-19 16:29 UTC |
| Sawtooth Outfitters | ★ 4.5 | $894.99 | +$16.55 | $867.49 | $27.50 | Stock not reported | 2026-10-19 16:13 UTC |
| Coyote Trail Supply | ★ 4.5 | $963.98 | +$85.54 | $938.99 | $24.99 | In stock | 2026-10-19 16:08 UTC |
| Timber Ridge Sporting | ★ 4.6 | $995.94 | +$117.50 | $965.95 | $29.99 | In stock | 2026-10-19 15:11 UTC |
| Great Lakes Tactical | ★ 4.4 | $835.98 | – | $810.99 | $24.99 | Out of stock | 2026-10-19 15:45 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/glock-21-gen4-45-with-holosun-507k-461-in-13rd-armor-black-cerakote-o85?days=730)).

| Date | Lowest landed price |
| --- | --- |
| Jul 27, 2026 | $889.01 |
| Aug 3, 2026 | $884.46 |
| Aug 10, 2026 | $882.38 |
| Aug 17, 2026 | $836.37 |
| Aug 24, 2026 | $815.76 |
| Aug 31, 2026 | $875.57 |
| Sep 7, 2026 | $890.69 |
| Sep 14, 2026 | $894.36 |
| Sep 21, 2026 | $890.15 |
| Sep 28, 2026 | $894.91 |
| Oct 5, 2026 | $849.98 |
| Oct 12, 2026 | $865.57 |
| Oct 19, 2026 | $878.44 |

## About this product

The Glock 21 Gen4 .45 with Holosun 507K is a handgun chambered in .45 ACP, with a striker-fired action, a 4.61-inch barrel and a 13-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.

## Specs

| Spec | Value |
| --- | --- |
| Caliber | .45 ACP |
| Type | Handgun |
| Action | Striker-fired |
| Capacity | 13 rounds |
| Barrel length | 4.61 in. |
| Finish | Armor Black Cerakote |
| Configuration | With red dot |
| Condition | New |

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