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Glock Frame Flex Videos...

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#2 ·
Too cool.
 
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#3 ·
That was insane, I wouldn't have believed it could flex that much without breaking within a few thousand rounds.
 
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#11 ·
It is also the theory on why Indiana State Police and others had issues with weapon mounted lights causing the guns to fail (specifically G22's, in this case). With extra weight on the rail, the rail may have flexed upwards and impeded the returning slide motion. At one point, some around here felt it was untested (and therefore unproven, and thereby unsafe!) to put a WML on ANY polymer frame until such testing was done to verify reliability. They felt steel or aluminum was far safer in terms of reliability without doing lots of testing due to the very fact that polymer flexed a LOT, and metal very little comparatively!

I don't know how any of those details worked out (for Glock's follow up evaluations into the "why"... but the ISP didn't pursue solving this riddle because the ISP bailed out on Glock and went to SIG after Glock initially blamed the ISP shooters for the issue, then once they knew it was their gun they were unable to get a fix short of swapping the guns out for G17's because they could not solve it, and the ISP did briefly use the G17 swap-outs until they decided to move to SIG).

But that flex with a WML could certainly impact things.

And that flex also is absorbing a fair amount of energy, thereby reducing the felt recoil for the shooter. That is a nice benefit!
 
#12 ·
boilergonzo said:
It is also the theory on why Indiana State Police and others had issues with weapon mounted lights causing the guns to fail (specifically G22's, in this case). With extra weight on the rail, the rail may have flexed upwards and impeded the returning slide motion. At one point, some around here felt it was untested (and therefore unproven, and thereby unsafe!) to put a WML on ANY polymer frame until such testing was done to verify reliability. They felt steel or aluminum was far safer in terms of reliability without doing lots of testing due to the very fact that polymer flexed a LOT, and metal very little comparatively!

I don't know how any of those details worked out (for Glock's follow up evaluations into the "why"... but the ISP didn't pursue solving this riddle because the ISP bailed out on Glock and went to SIG after Glock initially blamed the ISP shooters for the issue, then once they knew it was their gun they were unable to get a fix short of swapping the guns out for G17's because they could not solve it, and the ISP did briefly use the G17 swap-outs until they decided to move to SIG).

But that flex with a WML could certainly impact things.

And that flex also is absorbing a fair amount of energy, thereby reducing the felt recoil for the shooter. That is a nice benefit!
Click to expand...
It wasn't the weight, in itself, of the WML. The G22 and G23 worked fine with lights that used the spring-loaded bar system of attachment, like the Glock light. The problem only manifested with the lights with screw attachment, like the Streamlight.
 
#19 ·
boilergonzo said:
It is also the theory on why Indiana State Police and others had issues with weapon mounted lights causing the guns to fail (specifically G22's, in this case). With extra weight on the rail, the rail may have flexed upwards and impeded the returning slide motion. At one point, some around here felt it was untested (and therefore unproven, and thereby unsafe!) to put a WML on ANY polymer frame until such testing was done to verify reliability. They felt steel or aluminum was far safer in terms of reliability without doing lots of testing due to the very fact that polymer flexed a LOT, and metal very little comparatively!

I don't know how any of those details worked out (for Glock's follow up evaluations into the "why"... but the ISP didn't pursue solving this riddle because the ISP bailed out on Glock and went to SIG after Glock initially blamed the ISP shooters for the issue, then once they knew it was their gun they were unable to get a fix short of swapping the guns out for G17's because they could not solve it, and the ISP did briefly use the G17 swap-outs until they decided to move to SIG).

But that flex with a WML could certainly impact things.

And that flex also is absorbing a fair amount of energy, thereby reducing the felt recoil for the shooter. That is a nice benefit!
Click to expand...
familyman357 said:
It wasn't the weight, in itself, of the WML. The G22 and G23 worked fine with lights that used the spring-loaded bar system of attachment, like the Glock light. The problem only manifested with the lights with screw attachment, like the Streamlight.
Click to expand...
It was that the screw type lights were stiffening the frame causing less flex. This allowed the slide to travel faster to the rear and back into battery. It was doing it faster than the mag could get the next round up. That is why they later added the extra coil to the mag springs. They Gen 4 double spring was also meant to help with this issue.
 
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