$619.94Usually $839.39
Save $219.45
Glock 21 Gen4 .45 with Holosun 507K, 4.61 in., 13rd, OD Green
Granite Peak Supply4.6Price dropped
Glock 21 Gen4 .45 Optic Ready, 4.61 in., 13rd, OD Green
- .45
- 13rd
- 4.61 in.
- Striker-fired
- 14% below usual
- Price dropped
$610.44Usually $711.03
Save $100.59
Lower than usual: it usually sells for $711.03, its median price over the last 90 days.
$590.49 + $19.95 shipping to your FFL dealer, before tax and the transfer fee. 21% under MSRP.
Keystone Shooting Supply
Lowest of 3 stores4.8 (24.5K), in stock,
Compare 4 stores
3 in stock.
Ranked by landed price: the item plus shipping to you, before tax.
| Store | Landed price | Versus best | Stock | Store link |
|---|---|---|---|---|
Keystone Shooting Supply4.8 4.8(24.5K)store rating | $610.44 | Best price | In stock | Buy at Keystone Shooting Supply (opens in a new tab) |
 High Desert Guns4.2 4.2(1.9K)store rating | $611.44 | +$1.00 | Not reported | Buy at High Desert Guns (opens in a new tab) |
 Bayou Arms Co.4.1 4.1(1.7K)store rating | $614.49 | +$4.05 | Not reported | Buy at Bayou Arms Co. (opens in a new tab) |
 Timber Ridge Sporting4.6 4.6(41.3K)store rating | $697.98 | Not available | Out of stock | View at Timber Ridge Sporting (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
- $711.03
- 90-day median
- 90-day low
- $609.94
- 90-day high
- $781.78
- 2-year low
- $572.92
- Nov 30, 2025
- Unchanged for
- 2 days
- Since Oct 18, 2026
Every price change (110 in 2 years)
| Date | Lowest price | Change |
|---|---|---|
| Oct 18, 2026 | $610.44 | Down 9.4% |
| Oct 16, 2026 | $673.59 | Down 2.3% |
| Oct 10, 2026 | $689.10 | Down 0.6% |
| Oct 7, 2026 | $692.93 | Up 1.1% |
| Oct 2, 2026 | $685.53 | Up 12.4% |
| Oct 1, 2026 | $609.94 | Down 16.9% |
| Sep 25, 2026 | $734.29 | Down 1.1% |
| Sep 18, 2026 | $742.57 | Up 4.5% |
| Sep 2, 2026 | $710.47 | Up 10.5% |
| Aug 31, 2026 | $643.12 | Down 11.2% |
| Aug 26, 2026 | $724.07 | Down 0.9% |
| Aug 24, 2026 | $730.69 | Down 1.8% |
| Aug 15, 2026 | $744.01 | Up 4.6% |
| Aug 4, 2026 | $711.03 | Down 1.6% |
| Jul 28, 2026 | $722.34 | Down 7.6% |
| Jul 26, 2026 | $781.78 | Up 22.8% |
| Jul 14, 2026 | $636.75 | Down 3.1% |
| Jul 4, 2026 | $657.36 | Down 6.6% |
| Jun 27, 2026 | $703.58 | Up 16.9% |
| Jun 18, 2026 | $601.84 | Down 16.1% |
| Jun 4, 2026 | $716.91 | Down 2.7% |
| Jun 1, 2026 | $736.62 | Up 13.5% |
| May 25, 2026 | $648.98 | Down 6.9% |
| May 19, 2026 | $697.39 | Up 1.0% |
| May 16, 2026 | $690.54 | Down 3.3% |
| May 14, 2026 | $713.85 | Down 3.8% |
| May 5, 2026 | $742.08 | Down 10.3% |
| May 4, 2026 | $827.40 | Up 2.4% |
| May 2, 2026 | $808.34 | Up 11.4% |
| Apr 20, 2026 | $725.73 | Up 1.3% |
| Apr 17, 2026 | $716.13 | Down 8.3% |
| Apr 6, 2026 | $781.11 | Up 28.8% |
| Mar 28, 2026 | $606.35 | Down 13.5% |
| Mar 26, 2026 | $700.70 | Down 0.6% |
| Mar 20, 2026 | $704.59 | Down 9.5% |
| Mar 18, 2026 | $778.31 | Up 7.3% |
| Mar 15, 2026 | $725.62 | Up 1.9% |
| Mar 7, 2026 | $712.25 | Down 1.2% |
| Mar 5, 2026 | $721.08 | Up 7.4% |
| Feb 28, 2026 | $671.42 | Up 11.2% |
| Feb 25, 2026 | $603.69 | Down 21.4% |
| Feb 20, 2026 | $767.83 | Down 6.6% |
| Feb 17, 2026 | $821.85 | Up 17.9% |
| Feb 15, 2026 | $697.14 | Down 0.7% |
| Feb 3, 2026 | $702.02 | Up 11.3% |
| Jan 17, 2026 | $630.76 | Down 13.2% |
| Jan 16, 2026 | $726.29 | Up 6.0% |
| Jan 15, 2026 | $685.22 | Down 3.4% |
| Jan 11, 2026 | $709.43 | Down 0.9% |
| Jan 9, 2026 | $715.86 | Up 20.7% |
| Jan 7, 2026 | $593.05 | Down 18.3% |
| Jan 1, 2026 | $726.21 | Down 7.8% |
| Dec 27, 2025 | $788.05 | Up 23.9% |
| Dec 24, 2025 | $636.22 | Down 8.3% |
| Dec 1, 2025 | $694.05 | Up 21.1% |
| Nov 24, 2025 | $572.92 | Down 19.1% |
| Nov 23, 2025 | $708.54 | Down 3.8% |
| Nov 19, 2025 | $736.76 | Up 3.6% |
| Nov 13, 2025 | $711.25 | Up 15.8% |
| Oct 31, 2025 | $614.22 | Down 8.9% |
| Oct 28, 2025 | $674.07 | Up 16.7% |
| Oct 23, 2025 | $577.37 | Down 19.8% |
| Oct 13, 2025 | $719.82 | Down 8.6% |
| Oct 2, 2025 | $787.36 | Up 6.1% |
| Sep 11, 2025 | $742.28 | Up 4.3% |
| Aug 30, 2025 | $711.68 | Down 0.2% |
| Aug 28, 2025 | $712.79 | Up 1.9% |
| Aug 23, 2025 | $699.27 | Down 2.3% |
| Aug 21, 2025 | $715.60 | Down 7.0% |
| Aug 16, 2025 | $769.53 | Up 26.9% |
| Aug 10, 2025 | $606.42 | Down 14.5% |
| Aug 9, 2025 | $709.14 | Down 2.6% |
| Jul 12, 2025 | $727.72 | Up 0.4% |
| Jul 2, 2025 | $725.07 | Up 1.6% |
| Jun 30, 2025 | $713.74 | Up 2.2% |
| Jun 28, 2025 | $698.22 | Up 0.6% |
| Jun 18, 2025 | $694.27 | Up 5.8% |
| Jun 11, 2025 | $656.22 | Down 5.0% |
| May 20, 2025 | $691.04 | Up 5.0% |
| May 16, 2025 | $658.00 | Down 5.4% |
| May 10, 2025 | $695.89 | Down 0.0% |
| Apr 24, 2025 | $696.21 | Down 6.4% |
| Apr 22, 2025 | $743.42 | Up 6.2% |
| Apr 18, 2025 | $700.03 | Up 5.1% |
| Apr 15, 2025 | $665.94 | Down 8.8% |
| Apr 14, 2025 | $730.49 | Up 11.0% |
| Apr 7, 2025 | $658.09 | Down 7.2% |
| Apr 3, 2025 | $709.31 | Up 23.6% |
| Mar 30, 2025 | $573.65 | Down 18.2% |
| Mar 27, 2025 | $700.88 | Down 3.4% |
| Mar 23, 2025 | $725.55 | Up 2.6% |
| Mar 11, 2025 | $706.88 | Down 2.1% |
| Mar 9, 2025 | $721.80 | Up 2.5% |
| Mar 7, 2025 | $704.45 | Down 0.9% |
| Mar 3, 2025 | $711.14 | Down 3.4% |
| Feb 17, 2025 | $735.79 | Up 10.1% |
| Jan 30, 2025 | $668.20 | Up 0.7% |
| Jan 27, 2025 | $663.74 | Down 7.6% |
| Jan 21, 2025 | $718.44 | Up 2.6% |
| Jan 12, 2025 | $700.45 | Down 3.3% |
| Jan 1, 2025 | $724.53 | Up 1.7% |
| Dec 17, 2024 | $712.45 | Down 10.5% |
| Dec 11, 2024 | $796.24 | Up 13.3% |
| Dec 5, 2024 | $703.06 | Down 2.5% |
| Nov 13, 2024 | $721.07 | Up 4.5% |
| Nov 12, 2024 | $689.71 | Up 2.2% |
| Nov 8, 2024 | $674.83 | Down 8.7% |
| Nov 7, 2024 | $738.90 | Up 5.0% |
| Nov 2, 2024 | $703.46 | Down 2.2% |
| Oct 28, 2024 | $719.38 | Up 2.4% |
About this product
The Glock 21 Gen4 .45 Optic Ready 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 oD Green finish in the optic ready 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
- .45 ACP
- Type
- Handgun
- Action
- Striker-fired
- Capacity
- 13 rounds
- Barrel length
- 4.61 in.
- Finish
- OD Green
- Configuration
- Optic ready
- Condition
- New
$610.4414% below usual
at Keystone Shooting Supply
