Glock's sixth generation arrived in January 2026 and changed four things that matter: a lower optics mount, a flat-faced trigger, a reshaped grip with far more texture, and a return to a single recoil spring. Everything else is the Glock you already know. The catch is model coverage — Gen 6 exists only as the G17, G19 and G45 in 9mm, so if you want .40 S&W, 10mm, .45 or anything subcompact, Gen 5 is still the answer.
Gen 5
Introduced 2017 · full model range
- Glock Marksman Barrel
- nDLC finish on major metal parts
- Ambidextrous slide stop, no finger grooves
- Dual captive recoil spring
- Available across 9mm, .40 S&W, 10mm, .45 and subcompacts
Gen 6
Shipped January 2026 · three models
- ORS optic plate system, lower deck height
- Flat-faced trigger
- RTF6 texture, elongated beavertail
- Single captive recoil spring
- G17, G19 and G45 only, all 9mm
Where they actually differ
Pick a category to compare the two directly.
Smooth frame with finger grooves removed, interchangeable backstraps, moderate texture. A neutral grip that suits most hands without strong opinions either way.
More rounded and streamlined, with a built-in enlarged beavertail that lets you get your hand higher on the gun. RTF6 texture is considerably more aggressive and covers far more of the frame, including a thumb rest. The trigger guard is undercut.
This is the change most people notice first. Shooters who found the Gen 5 grip blocky tend to prefer the Gen 6 immediately; shooters with sensitive hands sometimes find RTF6 too coarse for all-day carry against skin. Worth handling both before deciding.
MOS models use adapter plates to mount a red dot. It works, but the optic sits higher on the slide and the plate stack adds height between your eye and the dot.
A revised optics mounting system sits the optic noticeably lower on the slide, which shortens the distance between your natural sight line and the dot.
If you shoot a red dot, this is the strongest single argument for Gen 6. A lower deck height means faster dot acquisition on the draw — the difference shows up most in the first shot.
The familiar curved Glock trigger. A defined wall, a clean break and a positive, tactile reset that most Glock shooters have built their timing around.
Flat-faced shoe sitting roughly 2mm closer to the grip, which helps shorter-fingered shooters reach the trigger without shifting their hand.
The most divisive change, and worth being straight about: the flat face is better geometry, but reviewers consistently report the Gen 6 wall is longer and mushier with a less defined break and a softer reset. Experienced Glock shooters often prefer the Gen 5 pull. Try both on a dry fire before you commit.
Dual captive recoil spring assembly. Deep aftermarket support — barrels, triggers and internals have been available for years from every major parts maker.
Back to a single captive recoil spring on the 9mm models. The striker channel is narrower and reshaped, and the extractor, backplate and several small internals are Gen 6 specific. The barrel uses revised geometry.
Most shooters will never notice any of this. If you build, tinker or swap parts, treat Gen 6 as a separate ecosystem for now — aftermarket barrels and triggers need new SKUs cut to the revised slide, and that catalogue is still filling in.
Magazines interchange across generations. Standard Glock sight cuts. Holsters fit as expected.
Magazines remain compatible with prior generations. Sight cuts are unchanged, so your night sights still fit. Holster fit is largely the same — the external dimensions barely moved.
The good news for anyone already invested: your magazines, holsters and sights carry over. What does not carry over is barrels and most internal parts.
Side by side
| Gen 5 | Gen 6 | |
|---|---|---|
| Introduced | 2017 | January 2026 |
| Models available | Full range including G17, G19, G26, G34, G45, G19X | G17, G19, G45 only |
| Calibers | 9mm, .40 S&W, 10mm, .45 AUTO and more | 9mm Luger only |
| Subcompact option | Yes | Not yet |
| Trigger face | Curved | Flat, sits ~2mm closer |
| Optic mounting | MOS adapter plates | ORS system, lower deck height |
| Grip texture | Standard Gen 5 texture | RTF6, broader coverage |
| Recoil spring | Dual captive | Single captive |
| Magazines | Interchangeable across both generations | |
| Sight cuts | Standard Glock, unchanged | |
| Holsters | Existing holsters generally fit both | |
| Barrels & internals | Mature aftermarket | Generation specific, aftermarket still filling in |
Which one should you buy?
Buy Gen 5 if
- You want anything other than a G17, G19 or G45
- You want .40 S&W, 10mm or .45
- You want a subcompact like the G26 or G43X
- You care about trigger feel more than trigger shape
- You build, and want proven aftermarket parts availability
- You already own Gen 5 pistols and want your parts bin to stay useful
Buy Gen 6 if
- You shoot a red dot and want the lowest practical mount
- You found the Gen 5 grip too blocky or too smooth
- You have shorter fingers and struggle to reach the trigger
- You want the current-production duty gun
- Your model is one of the three that exists in Gen 6
If you already own a Gen 5 and it fits you well, Gen 6 is a refinement rather than a reason to replace it. If you are buying your first Glock in one of the three available models and you intend to run an optic, Gen 6 is the better starting point.
Buying a Glock in New Jersey
Every handgun purchase in New Jersey requires a Permit to Purchase for each pistol, and every Glock we sell here ships with compliant 10-round magazines. Our counter staff walk customers through the permit process every week — bring your questions with you.
The fastest way to settle the trigger question is to hold both. We keep Gen 5 and Gen 6 pistols at the counter in Marlton and Jersey City, and you are welcome to handle them side by side before you decide. Out-of-state buyers can order online and we ship to the FFL of your choice.
Common questions
Are Gen 5 magazines compatible with Gen 6?
Yes. Magazines remain interchangeable across generations, so your existing Glock magazines will work in a Gen 6 pistol.
Will my Gen 5 holster fit a Gen 6?
Generally yes. External dimensions changed very little between generations, so holster fit is largely unaffected. Fit is tighter on some minimalist kydex designs, so check before relying on it for carry.
Are Gen 5 parts compatible with Gen 6?
Only some. Standard sight cuts are unchanged, so sights carry over. Barrels are Gen 6 specific due to revised geometry, and the striker assembly, extractor and several small internal parts are also unique to Gen 6.
Which Glock models come in Gen 6?
Three: the G17 full size, the G19 compact, and the G45, which pairs a G19 length slide with a G17 frame. All three are 9mm. Additional Gen 6 conversions are expected over time, but there is no subcompact and no non-9mm Gen 6 at present.
Is the Gen 6 trigger better than the Gen 5?
It depends what you mean by better. The flat face and closer reach are an ergonomic improvement, particularly for shorter-fingered shooters. But most experienced Glock shooters report the Gen 5 has a crisper wall, a more defined break and a more positive reset. Handle both before deciding.
Should I upgrade from Gen 5 to Gen 6?
For most owners, no. The changes are cumulative refinements rather than a performance shift. The strongest case for upgrading is if you shoot a red dot and want the lower optic deck height.