Glock 21 Pistols
We list 34 Glock 21 pistols, 1 in stock now from $620.00. Our in-stock G21 pistols are chambered in 45 ACP, with 4.61 inch barrels and 10 round magazines.1 Glock 21 in stock from $620.00. Every listing, side by side.
Price $620.00, as of Nov 8, 2026.
Pick your G21
Every G21 generation we list, with the count in stock and the lowest price for each.
All G21 pistols
1 in stock. Sold out listings stay up, after the ones you can buy today.
Built for your G21
Magazines, holsters and parts that fit the G21, from Glock and other makers. Parts ship to your door where your state allows.
About the Glock 21
The Glock 21 is Glock's full size .45 ACP: a 4.61 inch barrel and a 13 round standard magazine. Short frame versions are listed as the G21SF. It is the same size as the Glock 20, so holsters are often listed for them together.
Magazines from the Glock 41 fit it too: they take the same magazine, and theirs are as long or longer. Shop .45 ACP ammo.
Calibers and sizes
In stock by caliber: 45 ACP (1). Every in-stock listing has a 4.61 inch barrel. Magazines hold 10 rounds. Every one is $620.00 today.
Magazines and parts for the G21
We have 113 in-stock accessories made for the G21, from Glock and other makers: 20 magazines, 14 holsters, 8 grip modules & frames, 3 barrels and 4 optic plates. They ship to your door where your state allows.
Buying a handgun online
Magazines and most parts ship to your door where your state allows. Check state restrictions before you order, and read how buying a gun online works. Firearms can go on layaway, and financing shows at checkout when the order qualifies.
More Glock models
Glock G21 FAQ
Do you have the Glock 21 in stock?
Yes. As of Nov 8, 2026 we have 1 G21 pistol in stock, from $620.00. Stock changes daily, and listings that sell out stay on this page.
What calibers does the Glock 21 come in?
Our in-stock G21 listings are chambered in 45 ACP.
Do you ship Glock 21 pistols to my house?
No. A firearm bought online ships to a licensed dealer (FFL) you pick at checkout, and you fill out the transfer paperwork there. Magazines and most parts ship to your door where your state allows.
Which magazines fit the Glock 21?
We have 20 in-stock magazines that fit the G21 (shop them here). Magazines are made for a given caliber and grip size, so check the fitment line on each listing.