Gen4 Glock 21

Combining the ever popular .45 caliber round and a well known design, there should be little surprise that the Glock 21 has found its way to Gun of the Week status.

Now up to a Gen4 build, the G21 is a duty size pistol that sports a capacity of 13+1. The new model has a handful of upgrades, including interchangeable backstraps.

The G21 is tough, reliable and a .45. What's not to like?

Technical Specifications:

Caliber: .45 ACP
Gas Nitrate
Multiple Backstrap System
Standard or Night Sights
Barrel Length:
Overall Length:
26.46 ozs., Unloaded
13+1 Rounds
1:15.75” RH
MSRP: $687 Standard Sights, $734 Night Sights

For Further Reading:

Tested: The GLOCK Gen4 G21
GLOCK Introduces New Gen4 Models


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14 Responses to Gen4 Glock 21

Enrique wrote:
October 27, 2012

Just traded my M&P9 today for a crisp brand new G21 G4

Dave wrote:
August 26, 2012

I have a gen 3 21 and love it. It is in my bio safe and quite accessible at night, if ever needed. Approx 1000 rounds through it with various loads and never a hiccup.

Bill wrote:
August 22, 2012

Carry my Glock 21 Gen 4 on duty most days, except on days that I feel like carrying my Glock 22. I put my trust in both of them.

mike goodwin wrote:
August 21, 2012

gen 4 glock 23 .40 cal greatest gun I have ever owned

chuck wrote:
August 21, 2012

Looks good, I have a G36 & I love it... Perfection

Andreas wrote:
August 21, 2012

The only thing I don't like is the price. But you get what you pay for.

joy wrote:
August 21, 2012

Have you guys checked out wilson combat? My husband is a gunsmith there.

Wayne wrote:
August 21, 2012

Rodger- If it aint broke, don't fix it. The same is true of replacement. You have a great pistol. If it works, keep it. FWIW, the Gen4 21 without adding any of the grip inserts, has the same grip size as the 21sf models. But the Glock 21, in any flavor, is always a great choice! (if your hands are big enough lol)

Vernon DeLung wrote:
August 21, 2012

I have this gun. It is an awesome gun. I have put over 2000 rounds through it and it has never jammed, or miss fired.

doug wrote:
August 21, 2012

Love my Gen 4 G19, gonna have to check out this G21 for sure!!

Manny wrote:
August 21, 2012

I love my G21. Best gun ever! Very accurate and reliable. I wouldn't trade it for anything in the world.. Happy shootings!

steve wrote:
August 21, 2012

Man I LOVE Glocks. G21 is my favorite. G30's no punk either. Too bad I only own a 26 and a 23. But those are my babies so it's ok.

Rob wrote:
August 21, 2012

I won a Gen3 G21. Truthfully I do not like the RTF of the Gen4 pistols. I hope they'll make the Gen3s until I get all of the Glocks I want.

Roger wrote:
August 21, 2012

I have one of the first generation Model 21, looks as if I need to upgrade