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Gen. 5 among us before anyone knew it.

6K views 17 replies 14 participants last post by  V Gehts 
#1 · (Edited)
Seems Glock snuck the "marksman" barrel in on us with the G43 and possibly the 42 without mentioning it.

I picked up a used 43 Friday, nothing more than function tested it with 2 mags worth after arriving home.

I shot 75 -100 rds today, a mix of brass blazer and my handloads.
Noticed even Friday it seemed to shoot the thin jacketed blazer ammo better than other Glocks I have shot.
Shooting my known accurate 9mm load today I noticed it did not group much better (very odd) with my handload.

This made me curious...... took barrel out to inspect it closer.
To my surprise I saw more of a traditional cut rifling in the 43 barrel!
Went straight to safe for a G26 to compare..... sure enough much different.
First thought was gen 5 marksman barrel.

Other than ambi. slide stop and flared mag well, 42 and 43 have much in common with gen 5... evedently more than first thought.
So anyone with a 42 or 43 I would be interested to know what your barrel rifling is like?
My 43 was purchased new last December.
Serial BDRX...


G43


Traditional Glock poly
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#2 ·
Seems Glock snuck the "marksman" barrel in on us with the G43 and possibly the 42 without mentioning it.

I picked up as used 43 Friday, nothing more than function tested it with 2 mags worth after arriving home.

I shot 75 -100 rds today, a mix of brass blazer and my handloads.
Noticed even Friday it seemed to shoot the thin jacketed blazer ammo better than other Glocks I have shot.
Shooting my known accurate 9mm load today I noticed it did not group much better (very odd) than my handload.

This made me curious...... took barrel out to inspect it closer.
To my surprise I saw more of a traditional cut rifling in the 43 barrel!
Went straight to safe for a G26 to compare..... sure enough much different.
First thought was gen 5 marksman barrel.

Other than slide stop, 42 and 43 have much in common with gen 5... evedently more than first thought.
So anyone with a 42 or 43 I would be interested to know what your barrel rifling is like?
My 43 was purchased new last December.
Serial BDRX...
Pictures please? Anybody got a GEN five we get a picture of the barrel also ?
 
#5 ·
In looking at my G42 and G43 barrels, versus say my G26 barrels, the rifling looks much more like the rifling in the pictures guys have posted of their Gen 5 barrel rifling. In addition, the length of the throat is shorter than any other Glock I own (another published difference of the so called Gen 5 Marksmen barrel). I am actually not all that happy the throat seems shorter, as a reloader, I always liked how forgiving the Glock throat was to bullet profile and OAL.

I think I would have to agree, the Gen 5's seem to have been living among us for far longer than Glock's latest product announcement might indicate. :)
 
#6 ·
Glock claims that the new style rifling remains polygonal. It seems to me that it is hybrid: Glock's traditional curved hexagonal segments with a new linear land/groove-style transition between each polygonal segment... instead of the usual continuous curve transition between segments.

Why that would present an accuracy improvement is not obvious to me. Nor have I seen anything other than anecdotal accounts and Glock marketing claims that there is IN FACT any improvement at all.
 
#7 ·
Has been my experience poly rifled (not only glock) barrels are less accurate with plated/thin jacketed bullets for years .

My thinking is the smooth rounded edge of poly rifling does not grip the bullet as well as traditional cut rifling with sharp corner lands and grooves.

The new Glock rifling in my 43 goes along with this as well, shooting thin jacketed bullets better
 
#8 ·
Doesn't really matter what Glock calls it or anyone else for that matter.
My point was it is not the traditional Glock rifling and looks to be the same as pics of Gen 5 barrels I have seen on net.

It definitely is not a cut rifling , is a hybrid hammer forged poly as Mike-M said.

No chamber cast is needed to see it is different , even from the pics I posted above .

More testing is needed but initial testing on my end shows better than normal accuracy with range ammo but not nearly as good accuracy with good ammo.
Myself I would prefer the original Glock rifling for my 43.
 
#9 ·
I can handily clean plates and even clay birds at 25m with both my 19 gen 5 and 43. I like the new barrels.
 
#11 ·
Both G43`s in my gunsafe have this strange looking (hybrid?) rifled barrel, bought them both over a year ago on the same day, consecutive serial numbers. One of the G43`s runs flawless and shoots super accurate, the other one is like a mad child. The mad child 43 fails to feed, fails to eject, and its accuracy is all over the place. So whatever glock is doing, perfection is hit & miss among all the glocks i own. No gun manufacturer has the perfect firearm, not even glock. If you`ve got a gun that shoots great and operates without fail, your lucky.
 
#13 · (Edited)
While Glock may not say the G42 / 43 are part of the Gen5 family, they do share many features not found on previous generation pistols.

G42 / 43 features also found on the Gen5:
  • No finger grooves.
  • Trigger mechanism.
  • Two pins.
  • Firing pin safety.
  • Coil spring slide stop.
  • Coil spring slide lock.
G42 / 43 features not found on the Gen 5:
  • Standard barrel crown.
  • Mono - slide stop.
Have I missed anything?
 
#14 ·
I can handily clean plates and even clay birds at 25m with both my 19 gen 5 and 43. I like the new barrels.
I agree totally that the 43 is accurate enough to hit clays at 25 + yards even with cheap factory ammo.

What I do not like about "new" style rifling is the fact that with my handloads I was expecting much better accuracy like other Glocks with old style rifling.


I will try some different handloads and also remove the TLR-6 from 43 to take my normal grip to see if this helps .



While Glock may not say the G42 / 43 are part of the Gen5 family, they do share many features not found on previous generation pistols.

G42 / 43 features also found on the Gen5:
  • No finger grooves.
  • Trigger mechanism.
  • Two pins.
  • Firing pin safety.
G42 / 43 features not found on the Gen 5:
  • Barrel crown.
  • Ambi - slide stop.
Have I missed anything?
Not sure why Glock specs "crowned" barrel for Gen 5 ..... all Glocks I have also have a crowned barrel.
It may be a different crown than normal but...?

Only factory gun I can think of at the moment that does not have a crown is Win. 52 heavy barreled target rifle.

But agree 42 and 43 have much in common with Gen 5.
 
#17 · (Edited)
I agree totally that the 43 is accurate enough to hit clays at 25 + yards even with cheap factory ammo.

What I do not like about "new" style rifling is the fact that with my handloads I was expecting much better accuracy like other Glocks with old style rifling.


I will try some different handloads and also remove the TLR-6 from 43 to take my normal grip to see if this helps .





Not sure why Glock specs "crowned" barrel for Gen 5 ..... all Glocks I have also have a crowned barrel.
It may be a different crown than normal but...?

Only factory gun I can think of at the moment that does not have a crown is Win. 52 heavy barreled target rifle.

But agree 42 and 43 have much in common with Gen 5.
I should've called it a standard barrel crown. Fixed. Thanks!


Don't forget the Slide Stop design - same spring design found on gen-5, just incorporated into the new ambi stop.
Right. How could I have forgotten the coil slide stop spring. And the coil slide lock spring! Edited - Thanks!!
 
#16 ·
While Glock may not say the G42 / 43 are part of the Gen5 family, they do share many features not found on previous generation pistols.

G42 / 43 features also found on the Gen5:
  • No finger grooves.
  • Trigger mechanism.
  • Two pins.
  • Firing pin safety.
G42 / 43 features not found on the Gen 5:
  • Barrel crown.
  • Ambi - slide stop.
Have I missed anything?
Don't forget the Slide Stop design - same spring design found on gen-5, just incorporated into the new ambi stop.
 
#18 ·
While Glock may not say the G42 / 43 are part of the Gen5 family, they do share many features not found on previous generation pistols.

G42 / 43 features also found on the Gen5:
  • No finger grooves.
  • Trigger mechanism.
  • Two pins.
  • Firing pin safety.
  • Coil spring slide stop.
  • Coil spring slide lock.
G42 / 43 features not found on the Gen 5:
  • Standard barrel crown.
  • Mono - slide stop.
Have I missed anything?[/QUOTE
 
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