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**RollingCode3** · 01-26-2012, 4:43 PM

What kind of malfunction are you talking about? (FTF, FTE, etc..) I have heard Glock in 40s&w have issues with the mounted light.

**Falconis** · 01-26-2012, 5:56 PM

Gen 3's were jamming with the lights on. Gen 4's appear to be ok as long as they have the reworked RSA installed.

**Tallship** · 01-26-2012, 7:58 PM

Two things: make sure you have a follower that numbers 7 or higher, and make sure that you don't tighten the screw on the light too much.

**vintagearms** · 01-26-2012, 8:05 PM

Originally posted by NuGunner

Anyone have issues with their glock jamming when they have a surefire x300 equipped on it? If so how you solved the problem.

Call Glock. They will send you out some followers for free. Maybe even some mag springs.

**Roddd** · 01-27-2012, 8:57 AM

I have two Gen 3 G21s and they both have an X300 mounted on them. I shoot both regularly with the light on and haven't had an issue.

Glock jamming