called Glock earlier and someone in the tech dept had told him that they are already getting reports of malfunctioning Gen 4’s and that they think that the new double spring mechanism combined with unremoved anti seize lube, combined with weaker than usual ammunition, and even the smallest amount of “limp wristing” can cause failures to feed. I KNOW. If I was reading this from one of you…I would be calling BS. But this is absolutely true.
Now they design a new stronger recoil spring for the .40 and put it in the 9mm and make it marginally functional with weak ammo and less than perfect grip…
Hey I have a Colt 1911 Gold Cup Trophy SS that will fail to feed if you limp wrist it, does that mean Colt is inferior? I had a Kimber custom that fell apart 250 rds in it first time on the range that was brand new (plunger tube safety assembly fell off). That is an epic failure, no longer have the Kimber. My point is, there is a difference between limp wristing, weak ammo, and parts falling off your weapon. These are issues that most guns would have if those factors were present. I want to see how it does when it hits full production and is in the hands of capable users. Most of what he describes is user error…
OMG cleaning a new gun makes it work? That’s just sacrilege.
Know matter who makes a firearms, I recommend cleaning it even when new, lube it properly and shooting at least 200-500 rounds before judging it’s ‘reliability’.
It would either be good for one and either too soft or too stiff for the other. The other option is they split the difference and went with a spring rate in between.
Is there really that much difference between the two cartridges? They both use the SAAMI pressure spec of 35,000 CUP and launch approximately the same amount of slide mass backwards.
Slide velocity of the .40 is generally much faster since it’s pushing a heavier projectile at about the same speed. A lot of this depends on the ammo, of course, since you can get .40-cal ammo ranging everywhere from “Reduced Recoil” 165s to over-the-top 155gr and 180gr loads.
well according to what the guy said glock told him:
even if you clean off the anti seize lube, you’re still left with a stiff recoil spring that might not cycle the slide properly with less hot 9mm & is highly sensitive to limp wristing.
if this is true, then you need to “break in” the g17 gen4’s recoil spring before it works reliably?
this is not a good thing.
(again, this is assuming glock actually did tell the guy this)
It seems to me that 9mm Glocks have always had their best reliability with +P 9mm ammo. If you design a gun to run reliably and for a long time with +P and “+P+” 9mm ammo then it might well lead to less than ideal performance with milder 9mm ammo.
well i’m not sure why someone would take a pic of their gen4 glock falsely having problems, then concoct a story about calling glock…what would be the point of that?
The 9 mm glocks have always liked relatively hot ammunition for best functioning.
In theory:
Tipical combat loads in the 40 S&W have about 20-25% recoil impulse than 9x19 loads. Since the slide+barrel mass in the 40 and 9 mm glocks is very similar, and they use the same recoil spring, the design is biased towards hot 9 mm loads and relatively milder 40 loads.
Heavier recoil springs are of relatively minor importance to curb slide velocity, and have their downsides. IMO glock should increase the barrel + slide mass in the 40, that is the most important factor. Heck, they should have a different spring too. I don’t get the “one size fits all” approach.
Recoil springs last fewer rounds with higher slide velocities (40 S&W).
Frame takes a beating in the 40 too (it has to absorb more remaining energy at the end of the slide stroke). The new dual spring combo will help with the 40, but may increase the odds of limp wristing in the nine.
With higher slide velocity the magazine condition and its springs are also very critical, the 40 is less forgiving than the 9x19.
In any case, the 9 mm clocks have always been VERY reliable with hot ammo, and tolerate extensive use of hot loads that many older designs don’t like. Most defensive JHP loads, and NATO ball, are well above the milder practice loads.
