Glock Competition Spring Kit To Reduce Trigger
My friend Carl recently purchased a competition
spring set for his Glock 17. He wanted to improve his trigger pull and
increase his odds of hitting more zombies in the head than me (a friendly
zombie competition shooting at the range). The competition spring set
consisted of a new firing pin spring, safety spring and trigger spring and
it cost about $8 from Midway.com.
Competition Spring Kit Glock All Models
Product Description: The Glockworx Competition
Spring Kit contains an extra heavy trigger spring (heavier is better, as it
helps you pull the trigger), a reduced power firing pin spring, and a
reduced power firing pin safety spring. The result is the lightest and
smoothest possible trigger pull for your Glock. When used in conjunction
with the Glockworx V3 Race Connector (153-418), the trigger pull weight is
reduced down to 2 lbs total.
Carl installed the spring set which isn't very hard
if you have completely torn down your Glock before. Installation takes about
20 minutes. What takes a lot longer is cleaning your Glock (the extractor,
firing pin channel, etc.) before you put it back together. Tack on another
half hour at least.
Reference the applicable
Glock procedures for specific
instructions on how to tear down and re-assemble your Glock if you plan to
replace these springs.
I should note that prior to this, he had replaced
his 5.5 lb. factory connector with a 3.5 connector for a better trigger pull
(reference Glock 3.5 LB Connector Review).
Once installed, the spring set made a big difference
in the trigger pull during dry fire. It had a very smooth trigger pull.
He then brought his newly modified Glock 17 to the
range to test it in actual shooting. The trigger pull was excellent and
"smooth as butter". The only problem was, that for the 100 rounds that he
shot through it, he had 4 primer failures (either light strikes on the
primers or bad primers). Since we reload our own ammunition with Wolf
primers, it is not unusual to have primer failures but this seemed excessive
and that lead us to believe that these failures might be caused by a light
primer strike as the result of the weaker firing pin spring.
He decided to shoot it again next week and see if
the trend of high primer failures continued. In the meantime, he modified
his Glock 26 with the new competition spring set (minus the firing pin
The following week Carl brought his Glock 17 back to
the range and we did a trigger pull comparison with the following guns.
Glock 17 - with competition spring set and 3.5 lb.
Glock 19 - with 3.5 lb. connector
Glock 26 - with competition springs (only the safety spring and trigger
Glock 26 - standard (no trigger mods).
Three of us (my friend, myself and the range master)
dry fired each of the guns and made a dry-fire comparison.
We each determined that the Glock 17 had the best
Unfortunately, after the comparison test, Carl shot
another 100 rounds through his Glock 17 and wound up with another 5 primer
failures. We can't really be sure whether these failures were as a result of
bad Wolf primers, improper primer installations or the weaker firing pin
spring but we suspect the new firing pin spring is the culprit.
Carl decided remove the firing pin spring and
re-install the factory spring. Hopefully, there will be no more primer
failures. If there are more failures I will update this page accordingly.
I have replaced the 17 firing pin spring and I believe it is the culprit and
not the primers although the tolerances within the primer may have an
effect. The primer manufacturing tolerances are probably the difference
between the Wolf and the more expensive brands.
Here is my reasoning regarding the issue:
The primer detonation is a function of the rate of deformation and not the
necessarily the magnitude of deformation. The competition spring (lower
spring rate) not only accelerates the firing pin slower (less force) but
then the firing pin slows down faster as it contacts the primer because it
has less velocity and therefore less inertial force thus deforming the
primer at a lower rate. When we tried firing the failed rounds with a stock
spring, some did not fire because the primers were already deformed and the
second strike buy the stock spring firing pin hits the primer in the
deformed area and depending on tolerances, both in the primer and the gun,
and the placement of round in the chamber (rotationally), the round may or
may not fire.
Thatâ€™s my story and Iâ€™m sticking to it!
What do you think?
The following week Carl fired 200 rounds through his Glock 17 after
re-installing the original factory firing pin spring. He encountered no
The Glock competition spring kit is well worth the few dollars it cost if
you want a smoother trigger pull. I am ordering one for my Glock 19 but I
won't be installing the firing pin spring, only the trigger spring and the
The firing pin spring may work fine shooting factory ammunition, but when
shooting reloads with Wolf primers it has it's problems. If I didn't shoot
my reloads I would install the complete kit (all three springs) and test it
at the range.
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