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Posted: 7/25/2010 10:38:32 PM EDT
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Hey all, I have a GSG-5 that I’m enjoying thoroughly. However, I’ve started to notice the occasional double/burst fire (pulled trigger and it shot twice). It has happened when the gun was pretty dirty and also the first mag after a cleaning. On another occasion after firing a seemingly normal single shot, pulling the trigger on the next round had no effect, like it wasn’t cocked. When I ejected the chambered round, it had a light firing pin impression on it, not heavy enough to fire it (it re-fired fine). If that was the same problem that was causing the double-fires, it would kind of lead me to think it might be a hammer follow. Any thoughts and/or suggestions? I know I have seen someone mention this is a thread several months ago, but my searches were unable to turn it or any other threads up.
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According to the ATF, you are in possession of an unregistered machinegun.  That fiasco is sort of what had me concerned. I gave it a detailed cleaning today, down to almost total disassembly. So I will see if that fixes the problem, otherwise I'll give ATI a call. Thanks for the responses! |
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According to the ATF, you are in possession of an unregistered machinegun. That fiasco is sort of what had me concerned. I gave it a detailed cleaning today, down to almost total disassembly. So I will see if that fixes the problem, otherwise I'll give ATI a call. Thanks for the responses! Good luck =) |
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i had the same thing happening when mine was new, i put it down to needing breaking in, however someone on here said that it may be that the barrel was loose and had unscrewed slightly.
i was very sceptical, but my barrel WAS loose, only about a quarter turn - tightened barrel, retightened screws and never had the problem since 
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| Most likely, your barrel lockdown screw is loose. Take the handguard off and check the long hex-head screw/bolt in the barrel block. Odds are that it is loose. If the barrel gets loose and turns a bit, then the barrel breech sticks out too far inside the receiver and "pinches" the rimfire's rim between the bolt face and the longer barrel breech. This creates the odd double fire. I noticed my barrel lockdown bolt/screw was loose and after turning the barrel back a tad and putting some blue loctite on the threads of the barrel screw, I haven't had any more double fires. |
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just out of curiosity, and purely for informational purposes, does this mean the gsg can be modified to fire full auto? The main problem you'll run into (for more than 2 rounds fired) with 22LR is bolt bounce. Takes some careful tuning. Look around for 22LR kits for AR-15 - there are specific options for 22 full auto with a registered lightning link, registered receiver or registered drop in auto sear. Need the trip (specific to AR15/M16) and tuning to the bolt to make it work. |
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just out of curiosity, and purely for informational purposes, does this mean the gsg can be modified to fire full auto? The main problem you'll run into (for more than 2 rounds fired) with 22LR is bolt bounce. Takes some careful tuning. Look around for 22LR kits for AR-15 - there are specific options for 22 full auto with a registered lightning link, registered receiver or registered drop in auto sear. Need the trip (specific to AR15/M16) and tuning to the bolt to make it work. thanks, so has anyone been able to rig a lightning link or auto sear to the gsg? |
| Mechanics are too different to make work with the trigger pack. Geometry of the moving parts doesn't line up. You'd have a better chance getting a flemming to work. Really if you want a 22LR full auto - you're better looking into the Norrell 10/22, a RR or RDIAS w/ 22LR conversin or an HK with a 22LR conversion and registered pack/Flemming. Good luck =) |
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Most likely, your barrel lockdown screw is loose. Take the handguard off and check the long hex-head screw/bolt in the barrel block. Odds are that it is loose. If the barrel gets loose and turns a bit, then the barrel breech sticks out too far inside the receiver and "pinches" the rimfire's rim between the bolt face and the longer barrel breech. This creates the odd double fire. I noticed my barrel lockdown bolt/screw was loose and after turning the barrel back a tad and putting some blue loctite on the threads of the barrel screw, I haven't had any more double fires. I'm confused on which screw is the barrel lock down. Is it one of the three right under the back end of the hand guard (example, ignore the red)? I have done the screw upgrade, so nearly every screw on the gun is hex. |
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It's the one that sticks straight down from the bottom. It goes through the same block you refer to with the 3 screws in the side.
I had to loctite mine as it shot loose every time before I did it. In your photo it appears to be missing, or there is a short one up inside the hole. With a standard GSG5 Carbine (Not SD) it sticks out about an inch. |
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It's the one that sticks straight down from the bottom. It goes through the same block you refer to with the 3 screws in the side. I had to loctite mine as it shot loose every time before I did it. In your photo it appears to be missing, or there is a short one up inside the hole. With a standard GSG5 Carbine (Not SD) it sticks out about an inch. Okay, I know which one you are talking about now. I just found that photo on the web for reference, my gun does have one that sticks out from the bottom. It was hand-tight, so obviously it was too loose. Now, I'm trying to make sure I am putting the barrel back in the right place. I tried rotating the barrel with the screw out and it didn't seem to want to budge. I am not sure if it has turned out of alignment or not, the extractor cut-out still seems to align with the channel in the block. Is there another way to tell? Thanks! |
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I just ran my barrel down snug tight as far as it would go until the groove aligned. Loctited the screw in place and have had no problems at all. By groove, are you saying the area where the extractor goes when the bolt is closed? And can you just turn the barrel by hand and get it to move in/out? I have twisted it pretty hard with the screw out and it didn't seem to want to move either way. |
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I just ran my barrel down snug tight as far as it would go until the groove aligned. Loctited the screw in place and have had no problems at all. By groove, are you saying the area where the extractor goes when the bolt is closed? And can you just turn the barrel by hand and get it to move in/out? I have twisted it pretty hard with the screw out and it didn't seem to want to move either way. Yes, the extractor cut. I put a piece of strap on the barrel and used vice grips with just enough force to hold and turned the barrel. Mine was loose to start with. It has a reverse thread if I recall correctly. I tightened it as much as possible making sure the barrel didn't stick out in the breach, then backed off just a bit to align the cut. The loctited and secured the screw underneath. |
| Thanks again! My barrel seemed to be just barely tweaked. Maybe 1/32nd of a rotation, the extractor cut was still about the right position, but not exactly centered. I centered it up and loctited the screw and we'll see if that and the cleaning fixes the issue. |
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