You will be well served with either decision. Here are some considerations if favor of each; The G21 was my duty weapon before retiring. We had training G21.3's with well over 300K rounds and counting. They have hundreds, sometimes thousands of rounds put on them weekly. So longevity and durability is no issue with them. It's striker-fired just like any other Glock the HK is hammer-fired. As far as the HK45, it is very likely going to have the same longevity/durability in that you'll likely never shoot it out. It may be more comfortable in it's ergos and such. The G21 can feel like a brick in your hand depending on hand size. The HK, imo, is going to be a lot more comfortable.

I faced almost the same decision a couple of months ago. I was leaning towards the G21 becase that's what I've carried for nearly two decades. However, I came upon a deal for an HK USP 45 that I couldn't pass up and I'm glad I did. For me personally, I much prefer hammer-fired pistols. I prefer thumb safety/decockers. I like the ergos better than the G21. And the HK is strong enough to shoot 45 Super without mods which is not true with the G21. The G21 can be converted to 10mm which is a bonus option whereas the HK cannot without some serious modding. However, the ability to shoot 45 Super straight from the box kinda eliminates the 10mm conversion 'disadvantage' somewhat. The HK45 from what I've learned can also shoot 45 Super on a limited basis without mods. Put in a stronger RS and it's good to go for more extended shooting from what I understand.

Either is a good choice and will boil down to what you prefer. I'm very happy with the HK and I'm glad I chose it over the Glock.

 

Probably the HK, due to better ergos

 

Thanks Deputy.
Pricing isn't much of a difference between the two at this point. I can pick up a new HK45 V1 for $699 from Impact Guns.

https://www.impactguns.com/Semi-Aut...DA-SA-safety-decocking-lever-on-left-two-10rd-magazines-642230244702-745001-A5/

I do feel the HK is a bit more of a quality gun but I do like the G21.

 

I don't have the insight offered by DeputyDave, but I do have a preference for the HK in .45ACP over the Glock. Both can be a bit of a handful, in terms of size and control reach, so not as optimal for folks with tiny paws! Both are great guns. One will be easier to get parts for. It will be a tough call for you to make, but you can't make a bad choice!

 

I shoot 45 supers through my USP with just a heavier recoil spring. If you can do that in the HK45 it definitely gives you some interesting options. 45 ACP for the nightstand and 45 Super when out around pigs or bear.

 

Info please about that heavier recoil spring .

 

Won't go wrong with either choice.

 

For me I already made that choice and I still enjoy the HK. When I compared the two the Glock was just......meh in my opinion

 

Thanks for your input, guys. I'm seeing youtube videos that some prefer the compact version over the full size. The compact version is a pretty big gun.

What say you?

 

In the HK I prefer the full size. Ergos of it feels alot better to me. That said I have tried to like the compact to the point I have HAD two. I currently dont have any. Nuff said there I think.

 

I'm leaning toward this one at this point.

https://www.impactguns.com/Semi-Aut...g-lever-on-left-three-10rd-magazines-and-night-sights-642230245167-745001LE-A5/

 

The HK 45 and it's dad the USP 45 are a strong choice. The other gun you mentioned, not so much. Ask any PSP or ISP about the Glock 21 debacle.

 

I've been shooting both side by side extensively for years and concluded - all things considered -that the Glock works better for me. It may be different for you. Also, as a night stand 45, possibly having to engage in my underwear with no extra mag on belt, 14 rounds is better than 11.

 

My G21SF is what got me into an HK45. The Glock was just too "blocky" for me. I went to trade it in after about 1000 rounds through it. I had (and still have) a bunch of 1911's but I really wanted a "modern" .45. The gent at the store put the HK45 in front of me. After I picked it up, I was sold.

That HK45 has now spawned several other HK's that I have. As bac1023 said, it's all about the ergos.

 

USP over the G21, G21 over the HK45.

 

owned both, sold the Hk, i just shoot the 21 better.. Both are fine weapons.

 

I would choose the G21. It fits my hand perfectly.

 

After watching the video below, the LEM trigger models have me interested in one.

View: https://www.youtube.com/watch?v=1KVkWGMkOKE

 

Having owned both,
The HK45 is my house pistol.
The Glock G21 found a new home.
Although I never had a issue with the G21, the HK45 is a better built and refined pistol.

 

I’ve had both. It’s like comparing a camry to a bmw. Get the hk. I prefer the usp 45 over the hk45.

 

i only have 4 HK firearms: A VP9, a USP40, and an Expert in 45. I also have an P7M10 back in my safe somewhere. Hands down these tower over the Glock series in trigger feel and accuracy. I've never had to get a mag extension, file down the mag release, or put a slip on grip to be able to shoot an HK. Not better, just to be able to shoot it without some sort of discomfort.

For the record, I have about 8 of them and the only ones I can shoot (after filing the mag release down) are the 23 and the 30.

 

Hk every time. Huge advantage ergo wise
. Plus i used mine cocked and locked in single action.

 

G21 is just about my favorite full size Glock.

 

I love my G21SF, but at the same price point I'd try out the HK45.

 

Gen4 g21.
13 +1 rds of 45acp and grip feels like a g17.

 

Can't go wrong with both, but the HK was pricey ant the moment for me so I got a 21SF for real dirt cheap and here it is after 10K rounds.

 

Prefer the 21 myself. Fits my hand nicely and I much prefer the trigger on the Glock.

Glock holds more bullets too, if I recall correctly.

 

Pricing the USP I'd want now is over $1K.
Most here and from what I read prefer the HK USP over the HK45. I do prefer a striker fire over hammer fired but $625+ for G21 without night sights is high when you can buy the HK45 3 mag 10 round w/ night sights for about the same price but hammer fired.
Decisions,discisions.....