Here are the included backstraps that make the grip either 2mm or 4mm bigger.




Now for the range report. I started with Federal 115gr FMJ and had a failure to feed on the 2nd round. That kind of freaked me out knowing about the g17/g19 problems. I continued firing and had two more FTFs and one instance of the slide not locking back on the last round. Don't know if I was limp-wristing or what, but at that point I was really freaked out. Took a short break and started firing 115gr Speer Gold Dots. The G26 ate them right up without a single hiccup. I felt much better after that. In a few days, I'll go back to the range and try the Gen4 with some Speer Lawman.

Altogether, I'm neutral about the Gen4 G26. I like the smaller grip, but am not thrilled with the grip texture or failures that I experienced. Hopefully, my opinion will change for the better after spending a little more time with the gun.

Thank you for the report. Looks great.

Thanks for the range report, Melissa...

From my experiences and reading, the Walmart Federal 9mm 115gr FMJ ammo is almost infamous for 4th gen Glocks. The WWB 115gr seems to be better and doesn't cost much more... The best results I have had have been with American Eagle's 124gr FMJ... No failures of any kind in either of my 4th gen Glocks since I switched to it. It's about $11 for 50 if you buy them in bulk.

Originally Posted by __jb

Thanks for the range report, Melissa...

From my experiences and reading, the Walmart Federal 9mm 115gr FMJ ammo is almost infamous for 4th gen Glocks. The WWB 115gr seems to be better and doesn't cost much more... The best results I have had have been with American Eagle's 124gr FMJ... No failures of any kind in either of my 4th gen Glocks since I switched to it. It's about $11 for 50 if you buy them in bulk.

thanks for the pics and range report, melissa

glock gen4 9mm's are very ammo specific as far as reliability goes. many of the low priced target ammo will cause issues because of bullet weight/velocity. the new recoil assembly also makes both 9mm/40cal gen4's more sensitive to weak wrist failures.

there's a list online of 9mm ammo power factors that's good for gen4 glocks. i just tried finding it just now and couldn't. i'll post it if i see it again.



EDIT: found the list:

9mm FMJ Ballistics

Brand Weight Velocity Power Factor--(Best for GEN4 Glocks)
Fiocchi 124 1250 155.00
Fiocchi 147 1050 154.35
Fiocchi 158 940 148.52
S&B 115 1280 147.20
Am Eagle 147 1000 147.00
RWS Sport FMJ 124 1181 146.44
S&B 124 1181 146.44
Rem. Express 147 990 145.53
UMC 147 990 145.53
Lawman 147 985 144.80
Prvi Partizan 147 984 144.65
Fiocchi 115 1250 143.75
Am Eagle 124 1150 142.60

Glock Minimum* 124 1148 142.35
Win USA 124 1140 141.36
Blazer 147 950 139.65
Lawman 115 1200 138.00
PMC Bronze 124 1110 137.64
Win USA 115 1190 136.85
Rem. Express 124 1100 136.40
UMC 124 1100 136.40
Am Eagle 115 1180 135.70

Glock Minimum* 115 1180 135.70
Blazer 124 1090 135.16
Blazer Brass 124 1090 135.16
Lawman 124 1090 135.16
Cor-Bon match 147 900 132.30
My Reloads 147 900 132.30
PMC Bronze 115 1150 132.25
Prvi Partizan 115 1148 132.02
Blazer 115 1145 131.68
Blazer Brass 115 1145 131.68
Rem. Express 115 1135 130.53
UMC 115 1135 130.53
Federal Champ 115 1125 129.38

Originally Posted by Don Glock

thanks for the pics and range report, melissa

glock gen4 9mm's are very ammo specific as far as reliability goes. many of the low priced target ammo will cause issues because of bullet weight/velocity. the new recoil assembly also makes both 9mm/40cal gen4's more sensitive to weak wrist failures.

there's a list online of 9mm ammo power factors that's good for gen4 glocks. i just tried finding it just now and couldn't. i'll post it if i see it again.

9mm FMJ Ballistics

Brand Weight Velocity Power Factor--(Best for GEN4 Glocks)
Fiocchi 124 1250 155.00
Fiocchi 147 1050 154.35
Fiocchi 158 940 148.52
S&B 115 1280 147.20
Am Eagle 147 1000 147.00
RWS Sport FMJ 124 1181 146.44
S&B 124 1181 146.44
Rem. Express 147 990 145.53
UMC 147 990 145.53
Lawman 147 985 144.80
Prvi Partizan 147 984 144.65
Fiocchi 115 1250 143.75
Am Eagle 124 1150 142.60

Glock Minimum* 124 1148 142.35
Win USA 124 1140 141.36
Blazer 147 950 139.65
Lawman 115 1200 138.00
PMC Bronze 124 1110 137.64
Win USA 115 1190 136.85
Rem. Express 124 1100 136.40
UMC 124 1100 136.40
Am Eagle 115 1180 135.70

Glock Minimum* 115 1180 135.70
Blazer 124 1090 135.16
Blazer Brass 124 1090 135.16
Lawman 124 1090 135.16
Cor-Bon match 147 900 132.30
My Reloads 147 900 132.30
PMC Bronze 115 1150 132.25
Prvi Partizan 115 1148 132.02
Blazer 115 1145 131.68
Blazer Brass 115 1145 131.68
Rem. Express 115 1135 130.53
UMC 115 1135 130.53
Federal Champ 115 1125 129.38

EDIT: found the list:

I have not seen that listing posted elsewhere and I have looked for power levels of the popular 9mm rounds. Can you post a link to the original article?

I can see why the Glock Tech recommended using the Fiocchi 124gr ammo now. At 155.00, it's got the highest power factor on the list.

Looks like the American Eagle 124gr also sneaks in the preferred power range at 142.60. I have had goot results shooting this in my 4th gens.

Winchester White Box 115gr is right in the middle and the Federal 115gr is at rock bottom. That confirms what I have heard about the Federal Champion ammunition.

Great information, Don...

Good post, Melissa. The pics show it all as far as the smaller grip goes.