GLOCK Gen 4 vs Gen 5 Handgun Differences – What Are They?

Author: Jeremy of gives us a break down of the GLOCK Gen 4 vs the new GLOCK Gen 5 pistol differences.

Glock Gen 5 Handgun, by the river.
The new for 2017 , Glock Gen 5 Handgun

USA –  -( We have now seen the new Gen 5 Glocks pistols and you might be wondering what the difference is between the GLOCK gen 4 and GLOCK gen 5 handgun models.

At first glance, you may think not a whole lot but that has always been the case with Glock models. Nothing much really changes and what does, is usually very minor. But for those diehard fans, you will notice those Aesthetic changes rather quickly.

Let’s break it down to the nuts and bolts and go over what exactly has changed between these two Glock model gernerations.

According to Glock, there are 35 new or upgrade parts on the Gen 5 model Glock so let’s start with the most obvious being that the finger grooves have been removed. Based on demand, it seems that was one of the bigger requests by the majority. It’s one of those things you either love or hate. I’ve always been a fan of “grip” and finger grooves never bothered me. In-fact, I often times get a good frame stipple done for added texture and grip.

The flared mag-well is another aesthetic change you will notice at first glance. It’s not meant for competition shooting, however it will surely help those who compete ensuring faster reloading or in high stress situations when time is of the essence.

Glock G5 Handguns

GLOCK G19 Gen 4 vs G19 Gen 5 Handgun
GLOCK G19 Gen 4 vs G19 Gen 5 Handgun (gen 4 not to scale, lol)

The Gen 5 Glocks ship with Ameriglo GLOCK Spartan Operator night sights up from polymer sights. (Which are still available) This is ideal for low light shooting and accuracy.

One thing most people thought the Gen 5 Glock would have is front serrations. While it looks great, Glock has reverted back on this detail which I think is more ideal for people who like to customize their Glock slides. You will also notice a more rounded front end on the Gen 5 Glock. Furthermore, there is no more locking block pin. Glock will now revert to using a two pin system with all Gen 5 models.

GLOCK Gen 5 Handgun Details
GLOCK Gen 5 Handgun Details

Left handed shooters will be happy to know that the slide stop is now ambidextrous and easily accessible on both sides of the glock Gen 5 models. Sorry to say, that is the only good news I have for left handed shooters for the Gen 5.

I’m a Glock fanboy and have always loved Glock. But at first glance, I had to ask “what makes the G5 a game changer for Glock?” So let’s dive a little deeper.

Above is a view of the Glock 17 Gen 5 next to a Glock 34 Gen 4. The order in the picture is a bit mixed up, but this is how it goes: 17 frame, 34 slide, 17 slide, and 34 frame.
Above is a view of the Glock 17 Gen 5 next to a Glock 34 Gen 4. The order in the picture is a bit mixed up, but this is how it goes: 17 frame, 34 slide, 17 slide, and 34 frame.

Glock has coated all Gen 5 Glock handguns with a new nDLC finish which is supposed to last longer and protect against the elements better than previous generations. “Tougher and more durable”. That’s good for people who compete and use their Glock outside a lot.

The all new Glock Marksman Barrel! (GMB) apparently has better rifling for improved accuracy. Everyone always wants better accuracy when shooting and this is one of the better improvements I’ve seen so far.

Rolling into a list of internal changes, here are some of the more notable differences.

  • Firing pin has been reshaped to more of a square edge with ramping on both sides.
  • Gen 3 and 4 magazines will still fit the Gen 5 model.
  • The trigger return spring in the Gen 5 has been replaced and moved inside the mechanism housing.

Overall, not a bad list of upgrades. I think GLOCK delivered a good Gen 5 model especially with the GMB barrel. The standard MSRP is a respectable $565 (G19 ~ $559.00 online) which closely compares to most newer Gen 4 models on the market.

GLOCK Gen 5 Handgun Hand Size
GLOCK Gen 5 Handgun Hand Size

About Gundose;

My name is Jeremy. I run @gundosellc on Instagram. I'm a firearm photographer, blogger and FFL holder. Visit :

  • 24 thoughts on “GLOCK Gen 4 vs Gen 5 Handgun Differences – What Are They?

    1. I am 64 and just bought a Glock 17 Gen4 because I like the finger grips. I also got it compicated to help with kickback.

    2. Fixing to buy my first handgun ever at age 52. I am looking at the GLOCK 17 and trying to figure out if the gen 5 is worth $60 bucks over the gen 4 if anyone cares to comment. The gen4 is $499, gen5 $559 Thanks much! Anybody’s opinion outweighs mine at this point!

      1. If you are curent or retired military or law enforcement you can buy the “blue label” Glocks for a lot less. A new Glock 17, Gen 5 is only $398.20 but possibly more depending on niight sights, etc. You can either buy online direct from Glock or at a Glock “blue label” dealer. I hope this helps out with the price.

      2. I have a gen 3 19, a hopped up 17 and a brand new 34 MOS. The Gen 4 17 is my favorite so far. It has Zev Full Fulcrum trigger kit and Trijicon HD sights and Talon grips. I love Glock, but their triggers are bad for me. I prefer the flat face and adjustability of Zev. I have the same set up on my 19 and am waiting on a reply from them on their Gen 5 product.

      3. I would go with Gen. 3 or 4 depending on how it feels in your hand. Give the Glock 5 a year or two to work out any bugs in the design. Always happens with a new pistol design.

    3. I’m having a problem with my Hornady hollow point 147 gr ammo ejecting out of my Gen 5 Glock 19. I’m wondering if anything else inside has changed from the Gen 4.

    4. A few days ago I was shopping for a compact 9mm double stack pistol. I compared the Gen4, Gen5 Glocks and the HK VP9 SK. Best trigger goes to the VP9 SK, best ergonomics goes to VP9 SK. Glocks still remain very popular, but in the $550 to $600 price point they are about $100 overpriced. I bought the HK VP9 SK knowing I bought the best gun.

    5. Concerning reference to rifling, has Glock given up on polygonal rifling and gone to another form, that is one that would be equally compitable with both jacketed and cast bullets?

    6. I just bought a Gen 5 and I think I am going to like it very much. I think with the upgrades it is better than the Gen 4 which I also have. The differences between the Gen 4 and Gen 5 many will see as marginal. That is just a testament to how great the Gen 4 was to begin with. That new style barrel didn’t improve my shooting that much, but I am not blaming that on my new pistol; that one is on me. The only upgrade the Gen 5 needs now in my opinion is a few finger groves : )
      Maybe they could come up with a front strap to go along with the back strap that would make the groves optional : )

    7. I really love my Glock 19 Gen. 4, because it is so accurate and light weight. I used my Glock 19 when I was in the Alaska State Defense Force – Alaska State Guard – Military Police Brigade with 15 round magazines. My MP Associates almost all were Kimber 1911 .45 ACP 7 shot magazines with one bullet in the pipe total of 8 shots. They always thought it was a great idea that three or four of us were shooting Glock 17 9mm, Glock 19 9mm, and or Glock 21 .45 ACP with double stack 15 round magazines to keep the enemies heads down while the Kimber Shooters were reloading magazines or as we called it “GASING UP”. Our soldier who shot Glock 21 was an expert shot and often out shot the Kimber 1911 MP’s.

      1. Being a current active duty soldier, I can’t tell you how much I hate MP’s. Please tell me how you sleep at night knowing you joined the military with the intention of F**king over those that actually joined to serve their country?

    8. I like the Gen 4 grip better. The Gen 5 reminds me of my Gen 1. Same grip. I don’t see the mag well making that much of a difference. Everything else the article mentions except the barrel is not a big deal.

    9. I picked up a Gen 5 G19, Yesterday, it came with night sights, $609.00 all my other Glocks are Gen 4’s, and they’re great, but I have to admit this new 19 Gen 5 is really nice, the nights are great, no finger grooves are also nice, it allows my hand a more full grip on the gun, as well as the texturing on the grip, I doubt I will need any talon grip tape. I find the trigger to be good as is, that’s a big improvement IMHO, THE MELTING/BULLDOZE on the slide is nice, but for me being a lefty, what really impressed me was the addition of an AMBI SAFETY, that actually works with ease, my other Glock 19 Gen 4 has Crimson Trace laser wrap around grips and Heine night sights, ghost 3.5 trigger and a steel guide rod, and it has been a house gun, I’m leaving my new Gen 5 G 19 stock, because at this point I don’t see any need to add a thing, it’s sleek and has everything going for it just as is, I forgot to mention the new barrel, it to is supposed to me better and more accurate, but I can’t give any info on that until I give this gun a work out, but I can’t see that there will be any issues, the slide is tight and smooth when racking, I’m looking forward to a fun day at the range…

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