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AR15.COM
9/8/2009 11:20:42 AM EDT

I recently purchased my first Glock (Glock 19 – 9mm) which I intended to use as my primary self defense gun. It’s replacing a 10 year old H&K .45
I’m using a guide rod replacement laser by Lasermax.
My range test today was less than impressive.

While the accuracy was great, I had about 9 operational problems  in 100 rounds fired.

1.Breach would fail to close completely after cycling a round. The slide would stop about a 1/8 of a inch short of actually closing.  A gentle nudge forward would lock it. (happened 5 times )
2.In one case the slide failed to lock back after last round was fired, but it did cock the gun resulting in a dryfire. (1 occurrence)
3.A couple of miss-feeds (bullets entering the chamber at an angle), but no stove pipes. (3 times)

This was with new Glock mags and average quality PMC ammo.

It would seem that these can all be attributed to improper tension on the main recoil spring.   With both the factory and the lasermax spring, the Glock’s slide seems to be under more pressure than my Sig, H&K or M9.  
So without simply blowing a lot of rounds using the factory spring, any idea how to diagnose what the problem is?

9/8/2009 11:28:51 AM EDT
[#1]
More than likely, its the Lasermax. Just swap it out for the original recoil spring assembly for your next range trip..
9/8/2009 11:41:57 AM EDT
[#2]
I'ts the Lasermax.
9/8/2009 11:43:46 AM EDT
[#3]
Quoted:
More than likely, its the Lasermax. Just swap it out for the original recoil spring assembly for your next range trip..


this

stick w/ the stock guide rod/spring and your glock will be very reliable; if you want a laser, opt for the Crimson traces, where the mail module is not internally placed w/ the critital componets, like the rod/spring assembly
9/8/2009 11:44:50 AM EDT
[#4]
The lasermax tends to be a bit fragile too.  Be sure to dump it before the end of the warranty period.
9/8/2009 5:33:25 PM EDT
[#5]
Quoted:
More than likely, its the Lasermax. Just swap it out for the original recoil spring assembly for your next range trip..


This.

If it runs perfectly with the stock recoil spring assembly back in place, to me it would be obvious that it's the Lasermax.

9/9/2009 12:27:20 PM EDT
[#6]
Its the LaserMax. The department I worked for had some money they had to burn before the end of the year, and bought a BUNCH of the lasermax guide rods. One year later and nobody has the laser max in there handgun anymore.
9/9/2009 6:09:12 PM EDT
[#7]
That sucks!  I've used a Lasermax in my G21 for more than 10 years and haven't had any problems.  Be sure to post your results after switching the guide rod back.
9/9/2009 7:31:59 PM EDT
[#8]
Seems like what I read is that some have problems with them, some don't.
9/9/2009 7:43:12 PM EDT
[#9]
As others have said, it's the Lasermax. More specifically, it's the recoil spring on the Lasermax. I find the Lasermax recoil springs to be very heavy compared to stock, and it is likely "over sprung" for 9mm. The spring is not allowing the slide to move back far enough consistently. It may soften with some additional use.
9/10/2009 9:16:37 AM EDT
[#10]
I installed the LaserMax in my G26 and G17 before I fired a round through either - 500rds each and no failures of any kind.  If anything, the LaserMax guide and springs look to be far better quality than the stock Glock components.  Did you double, triple check your installation?  If it was put in incorrectly, and it is very easy to do, replacing it with the stock piece won't prove the LaserMax defective.  Also, were you using factory 10rd mags in your 19?  I have read of folks experiencing problems with these occasionally when brand new.  I have read that LaserMax customer service is good, should you have to warranty it.  Anyway, hope it works out for you.