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Posted: 10/25/2012 10:59:38 AM EDT
| I recently bought an I.O inc Polish AK47 and I am having some problems. I did put a bumpski stock on the firearm. When using the bumpski, after about 8-10 rounds the gun will eject the empty round and load a live round but will not reset the trigger. I have to manually slide the bolt back, eject the live round and chamber another round before the gun will fire again. It is not consistent. I have completed the function test, checked to see if the hammer springs are routed the right way, checked to see if the trigger spring is functioning. I did check with IO and they told me to send it back, saying that maybe the hammer needs filing. Before I do that, is there anything simple that i can do prior to paying for the shipping costs? The gun is new, about 400 rounds have been fired. Any suggestions out there? |
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I recently bought an I.O inc Polish AK47 and I am having some problems. I did put a bumpski stock on the firearm. When using the bumpski, after about 8-10 rounds the gun will eject the empty round and load a live round but will not reset the trigger. I have to manually slide the bolt back, eject the live round and chamber another round before the gun will fire again. It is not consistent. I have completed the function test, checked to see if the hammer springs are routed the right way, checked to see if the trigger spring is functioning. I did check with IO and they told me to send it back, saying that maybe the hammer needs filing. Before I do that, is there anything simple that i can do prior to paying for the shipping costs? The gun is new, about 400 rounds have been fired. Any suggestions out there? You are getting hammer follow. Some of the IO receivers have the axis pin holes drilled on the high end of tolerance stacking. This allows the hammer to either fail to be engaged by the sear due to hitting the top of the disco or it may slip out during the cycle before the trigger is released. Even some of the NDS economy receivers had this issue. The only way to correct this is by carefully removing some material from the bottom of the disco stop and measure the gap distance between the hook engagement. It needs to be brought in to roughly 0.006" to ensure that the sear always catches the hammer. If the trigger axis is too low, the shelf height on the hammer sear may need to be lowered as well. Either way, have it corrected since hammer follow can sometimes result in multiple rounds being discharged with one pull of the trigger. Even though it is a manufacturing defect, it is still considered to be illegal. |
| I got my rifle back today, fast turn around on I.O.'s part. There was no explanation on what was done to the gun in the box so I emailed them. The response was "They had to dress up the hammer with a file a little." I will get an opportunity to shoot the gun this next weekend. Hopefully, that fixed the problem. |
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I got my rifle back today, fast turn around on I.O.'s part. There was no explanation on what was done to the gun in the box so I emailed them. The response was "They had to dress up the hammer with a file a little." I will get an opportunity to shoot the gun this next weekend. Hopefully, that fixed the problem. When they "dressed up the hammer with a file", they lowered the shelf on the rear of it. When you are testing it next trip to the range, fire at least 20 rounds by pulling the trigger as slowly as possible. You may still have an issue. When they lowered the shelf on it, this changes the amount of gap in the area where the disconnect engages the hammer. The space widens and allows the hammer to fit exactly between the trigger hook and sear. It can slip right between the two at just the right angle. If that happens, post your results on here and we can tell you how to correct the gap. |
| Well, I took the gun out today to check out the "repair" that I.O did on my rifle. The first shot, trigger would not reset, the gun did eject the fired round and cycle another live round into the chamber, but the trigger did not reset. It appears they did absolutely nothing to the gun when I sent it in. Not real happy about this. If they would have even test fired the gun they would have known that their trigger job did not solve the problem. So, what is the gap that i need to try and fix to get this gun working the way it should? I never knew that AK's were this finicky. Thanks in advance for any help/advice I can get to fix this problem. |
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Indeed, i have thought of that. Right now, I am not sure this gun will ever fire the way it is supposed to. I would like an AK that actually works. Check out this link It may show you a way to solve your trigger problem. http://www.arizonaresponsesystems.com/notes/notesak/aktrigger/pageaktrigger.shtml |
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Indeed, i have thought of that. Right now, I am not sure this gun will ever fire the way it is supposed to. I would like an AK that actually works. Rooster, replacing the FCG with a new one is most likely not going to solve the issue unless they send you an original military issue one. But, that would make your rifle no longer 922r compliant. Does your receiver have one or two hook reliefs cut into it? Those are the slots cut into the receiver right where the trigger enters. If you have only one, it is better to purchase a Tapco G2 DOUBLE hook trigger group and file the second channel to allow the install. It only takes a couple of minutes to create the second relief using a rat tail file. You must go slow though and don't remove too much material. Measure a lot, try the fit many times and file a little. The second relief cut should be MUCH shorter than the one that came with the rifle. The flat section on the bottom of the secong hook (elbow) should rest flush against the inside of the receiver, right in front of the relief, when the trigger is pulled all the way back. Now, the link that Paintballer posted explains exactly what I described in my earlier posts. If you do add the double hook G2 though, you only need to perform the step for removing a tiny bit of material from the disconnector stop and you will not need to lower the hammer shelf. Even if you screw up on your first try, it's okay, you will still have another disconnector to use until you get it just right. Using the double hook prevents trigger over travel. The single hook reliefs on those receivers are usually cut too long, allowing the hook to travel too low and allowing the disco to move too far forward. This causes the hammer to hit the top and not engage. IO Inc and Century have proven that it is actually possible to screw up building a rifle that has such loose tolerances. Maybe they should do an episode on MythBusters or something. |
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