I’ve heard some reports of the use of weapon lights causing jams on some G22 models.
Is there any evidence of any reliability problems when using the Streamlight TLR-1 weapon light on a G19 or G23 or G21SF (all last years/3rd gen models)?
Or, are these light/gun combinations pretty much stone cold reliable?
My agency issues the TLR-1 and TLR-1s along with a variety of .40 Glocks. We have experienced malfunctions with the light mounted on well used G22’s and G22C’s but as long we swap out old guide rods (and springs) for new on a regular basis the malfunctions go away. I have a TLR-1 on a G23C and a G19 and have never had an issue.
I run the G30SF and G21SF with the Insight WX150 lights and after a few thousand rounds on both guns I’ve yet to experience one problem with either gun. I’ve upgraded a few parts though so I cannot attest to the reliability of 100% factory stock guns.
Run em on my 17’s and 19’s without issue.
Two G19’s , both approaching 3000 rnd mark. One with the TLR-1 and the other TLR-1S. Both with the original guide rod/recoil spring assembly. No issues.
Good news to hear from you guys. Thank you. I’ve only had limited shooting time with my G19 and the TLR-1. About 30 rounds of 127 gr. +P+ Ranger RA9TA and all went fine. Will continue the testing with other ammo and my other guns.
Both my Gen. 3 Glock 19’s run perfectly, with attached Surefire X300’s. I don’t see why it would be any different with TLR-1’s. Can’t tell you firsthand about 23’s or 21’s.
I have a TLR-2 on my G19, about 500 rounds down the pipe, no failure of any kind. (Low round count, I know.)
My question is, how does an attached weapon-light cause failures?
While my 21SF’s run fine with either light, and the 9’s seem to be the least affected by lights, I would still go to the range with the light attached and the ammo you normally shoot just to be sure. While my department is a relatively small sample, I have seen enough to know one thing…you never “really” know until you check for yourself…
No issues on gen 3 G19 and G17.
My duty Glock 21SF with the TLR-1 has over 10K rounds through it with ZERO problems. My department’s issue ammo is the Federal 230gr. HST +P.
My off duty Glock 20SF also has the TLR-1 and has 6K rounds through it also with ZERO problems. I load it with Winchester 175 gr Silvertips.
So far, so good. 
The problems you are talking about were specific to the Glock 22’s. The lights would change the timing between the action and the magazine to the point that it would induce a malfunction.
The solution from Glock was to change magazine springs (from a 10-coil to an 11-coil). This made the speed of the next round being fed from the magazine more reliably match the speed of the action.
I worked through this problem directly with Glock on my old G22 duty gun. For the past three years I’ve carried a G21SF with a TLR-1 and had ZERO problems.
Hope this helps.
G19, TLR1. Couple of hundred rounds with light mounted. No issues.
Took CHL class with it mounted, also no issues.
Good with 9mm and .45 ACP Glocks, both TLR-1/TLR-1s and X300. Can’t vouch for the .40 S&W models, though – as I don’t have any Glocks in .40 S&W.
If I were to pick up a Glock in .40, that’s where I would look to the Gen4 models.
anyone have any fix for the jams caused by a tlr-1 on a g23? i called glock and they said they would call me back, but they haven’t done so yet.
I have the number 8 followers on my magazines. Do I need new magazine springs? a new recoil spring? Anyone have any tips to help?
9x19mm Para Glock pistols both Fullsize and Compact should be %100.
.40 S&W is usually %100 with Gen3, but I would rather go with a Gen4 model with the most recent spring assembly.
Good luck.
No issues with any gun running a TLR-1, in my experience. I read the same reports of malfunctions with some .40 Glocks, but have never actually seen a failure attributable to a light. Seems like the additional weight of a rail-mounted light would only tend to make the gun a more stable platform for extraction and ejection. If that’s true - and it may not be true - I never understood the potential problem.
The TLR-1 is a great value in a weapon light, by the way.
zk
Yeah, I’d never seen the failures before I actually got my light. Haha, Every two rounds or so is a FTF or a FTE with the light on, the gun runs flawlessly with the light off.
From what i’ve read, the light makes the frame a bit more rigid, which then increases the slide velocity, which then translates to the magazine springs which aren’t able to push up the rounds fast enough.
Ran my 19 in a class with the TLR-1 attached without a problem.
I believe the problem is only with the .40 cal glocks.