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AK Tech-Sight Problem Updated with cause and mini rant
4/28/2010 1:42:02 AM
Ok, I have a normal AK, a Romainian I believe, and I went to put a set of Tech Sights on it today. I tried to zero it, and dammit, I ended up with the rear sight 1/2 turn from the right side stop, and the front sight drifted fully over to the left, just to get zeroed. The problem is this gives me a funky lopsided sight picture and I have already caught myself mis-aligning thiings.
So, what do I have to do to tweak this gun so my sights aren't so Whacked? I can provide pictures and measurements, but I am not sure what pix and measurements will help y'all figure this out, so the pix are on request...
Edit:
@$#%$# %$&%$ @%@@@# 2%@%@%@$#%@
I am the Proud owner of $180 worth of USELESS CRAP! Oh, my good Lord I am sooooo fucking pissed off right now, and I don't even know who to be pissed at! You see, I decided that I wanted to try taking an AK to an appleseed with the express purpose of shooting a rifleman score [as a result of a conversation with an IIT about how rare AK rifleman scores are.] Sooo, $180 later, I have a Tech sight, extra spring, buffer, and skinny frontsight that I was hoping would be repeatable enough for me to make the grade. The install is pretty straightforeward, and the only trouble I had was the 3 handed job of putting the rear sight spring retaining pin, but that was more annoying than an actual problem. Then I noticed that when I looked through the sight, centering the fronts sight, the rear sight mounting ears were offset to the right quite a bit. Taking it to the range to zero it confirmed something was not right, as I was 10" to the left at 25M. By drifting the front sight as far left as it would go, and cranking the TS damn near to the right side stop, I made it on paper, but it was funky. So I disassemble the thing and try to measure....and lo-and behold, the barrel is not exactly square with the reciever. The FSB is straight, and with the stock rear sight it works OK, so the Front and rear sights are lined up with the barrel, but the back of the receiver is apparently not lined up...
So, who's fault? Nobody that I can blame. Maybe the gorillas at Century's assembly plant. Certainly not the tech sights, the parts I bought are top notch and have no visible defects or deformities. In retrospect, a straight edge placed on the front sight and extending back to the rear sight notch should point toward the center of the back of the top cover, NOT toward the edge of the takedown button.
So, anyone want to swap me for a Larue iron dot mount for an AK?
So, what do I have to do to tweak this gun so my sights aren't so Whacked? I can provide pictures and measurements, but I am not sure what pix and measurements will help y'all figure this out, so the pix are on request...
Edit:
@$#%$# %$&%$ @%@@@# 2%@%@%@$#%@
I am the Proud owner of $180 worth of USELESS CRAP! Oh, my good Lord I am sooooo fucking pissed off right now, and I don't even know who to be pissed at! You see, I decided that I wanted to try taking an AK to an appleseed with the express purpose of shooting a rifleman score [as a result of a conversation with an IIT about how rare AK rifleman scores are.] Sooo, $180 later, I have a Tech sight, extra spring, buffer, and skinny frontsight that I was hoping would be repeatable enough for me to make the grade. The install is pretty straightforeward, and the only trouble I had was the 3 handed job of putting the rear sight spring retaining pin, but that was more annoying than an actual problem. Then I noticed that when I looked through the sight, centering the fronts sight, the rear sight mounting ears were offset to the right quite a bit. Taking it to the range to zero it confirmed something was not right, as I was 10" to the left at 25M. By drifting the front sight as far left as it would go, and cranking the TS damn near to the right side stop, I made it on paper, but it was funky. So I disassemble the thing and try to measure....and lo-and behold, the barrel is not exactly square with the reciever. The FSB is straight, and with the stock rear sight it works OK, so the Front and rear sights are lined up with the barrel, but the back of the receiver is apparently not lined up...
So, who's fault? Nobody that I can blame. Maybe the gorillas at Century's assembly plant. Certainly not the tech sights, the parts I bought are top notch and have no visible defects or deformities. In retrospect, a straight edge placed on the front sight and extending back to the rear sight notch should point toward the center of the back of the top cover, NOT toward the edge of the takedown button.
So, anyone want to swap me for a Larue iron dot mount for an AK?
4/28/2010 10:27:17 PM
How was it before you put the tech sights on?
BSW
BSW
4/29/2010 12:14:31 AM
It was OK. The front sight was roughly centered, and, while Zeroed is an awfully strong word for an AK, the bullets went in the same general direction as the sights..
The tech sights customer service mentoned it might be a twisted receiver... but I don't really know how to check this, or more importantly, how to fix it. I assume I can't just chuck it up in a vise and bash it with a hammer, right?
The tech sights customer service mentoned it might be a twisted receiver... but I don't really know how to check this, or more importantly, how to fix it. I assume I can't just chuck it up in a vise and bash it with a hammer, right?
4/29/2010 11:47:17 AM
Originally Posted By barrysuperhawk:
It was OK. The front sight was roughly centered, and, while Zeroed is an awfully strong word for an AK, the bullets went in the same general direction as the sights..Mine are all zeroed and will hit the target the rifle was designed to hit within the effective range of the cartridge.
The tech sights customer service mentoned it might be a twisted receiver... but I don't really know how to check this, or more importantly, how to fix it. I assume I can't just chuck it up in a vise and bash it with a hammer, right?
A twisted receiver is possible, but it is hardly the most likely cause of the problem.
It was OK. The front sight was roughly centered, and, while Zeroed is an awfully strong word for an AK, the bullets went in the same general direction as the sights..Mine are all zeroed and will hit the target the rifle was designed to hit within the effective range of the cartridge.
The tech sights customer service mentoned it might be a twisted receiver... but I don't really know how to check this, or more importantly, how to fix it. I assume I can't just chuck it up in a vise and bash it with a hammer, right?
A twisted receiver is possible, but it is hardly the most likely cause of the problem.
Have you checked to see that the fsb is straight?
Are these cover mounted sights? If so, is the cover on straight?
Did you start out with both sights centered? If so where was POI in relation to POA?
4/29/2010 1:26:54 PM
Originally Posted By barrysuperhawk:
It was OK. The front sight was roughly centered, and, while Zeroed is an awfully strong word for an AK, the bullets went in the same general direction as the sights..
The tech sights customer service mentoned it might be a twisted receiver... but I don't really know how to check this, or more importantly, how to fix it. I assume I can't just chuck it up in a vise and bash it with a hammer, right?
It was OK. The front sight was roughly centered, and, while Zeroed is an awfully strong word for an AK, the bullets went in the same general direction as the sights..
The tech sights customer service mentoned it might be a twisted receiver... but I don't really know how to check this, or more importantly, how to fix it. I assume I can't just chuck it up in a vise and bash it with a hammer, right?
Do you have another AK to try the tech sights out on? That'd be one way to see if it's the rifle or if the sights were badly made.
Not to be a dick, but it sounds like the easiest fix is to use the original sights.
BSW
4/29/2010 11:31:21 PM
Originally Posted By briansmithwins:
Do you have another AK to try the tech sights out on? That'd be one way to see if it's the rifle or if the sights were badly made.
Not to be a dick, but it sounds like the easiest fix is to use the original sights.
BSW
Do you have another AK to try the tech sights out on? That'd be one way to see if it's the rifle or if the sights were badly made.
Not to be a dick, but it sounds like the easiest fix is to use the original sights.
BSW
Originally Posted By POLYTHENEPAM:
Have you checked to see that the fsb is straight?
Are these cover mounted sights? If so, is the cover on straight?
Did you start out with both sights centered? If so where was POI in relation to POA?
Have you checked to see that the fsb is straight?
Are these cover mounted sights? If so, is the cover on straight?
Did you start out with both sights centered? If so where was POI in relation to POA?
Not to be a dick indeed. Ok, heres the info for anyone that doesent know what tech sights are:
http://www.tech-sights.com/ak.htm
http://www.tech-sights.com/AK%20FAQ.pdf
Now, to answer questions. No I only have one AK these will fit on [the Yugo's are different]
Other than eyeballing it, is there a way to check the FSB?
If the FSB was crooked, wouldn't the stock sights be F'd also?
The POI was about 10" left at 25 meters with everything centered.. With everything centered it is obvious the new rear sight, the old sight mounting channel and the front sight are not in a line, but as simple as it may be, I am not sure of how and what to measure to see what's bent...
4/30/2010 9:06:06 AM
Originally Posted By barrysuperhawk:
Other than eyeballing it, is there a way to check the FSB?
Lay a good straight edge along the side of the receiver so it extends to the fsb. Measure from the edge to the fsb. Repeat on the other side of the rifle, making sure the straight edge is positioned so you're measuring to the same location on the fsb. If the measurements are not the same the fsb is not straight.
If the FSB was crooked, wouldn't the stock sights be F'd also? I would think so, but several things might be going on; 1.The difference in sight radius might make the problem more noticable. 2. Your comment about zeros and AKs indicates that the rifle might not have been zeroed properly before, perhaps due to unfamiliarity with the sights. This is especially true if you zeroed the rifle at short range.
The POI was about 10" left at 25 meters with everything centered.. With everything centered it is obvious the new rear sight, the old sight mounting channel and the front sight are not in a line, but as simple as it may be, I am not sure of how and what to measure to see what's bent...
Other than eyeballing it, is there a way to check the FSB?
Lay a good straight edge along the side of the receiver so it extends to the fsb. Measure from the edge to the fsb. Repeat on the other side of the rifle, making sure the straight edge is positioned so you're measuring to the same location on the fsb. If the measurements are not the same the fsb is not straight.
If the FSB was crooked, wouldn't the stock sights be F'd also? I would think so, but several things might be going on; 1.The difference in sight radius might make the problem more noticable. 2. Your comment about zeros and AKs indicates that the rifle might not have been zeroed properly before, perhaps due to unfamiliarity with the sights. This is especially true if you zeroed the rifle at short range.
The POI was about 10" left at 25 meters with everything centered.. With everything centered it is obvious the new rear sight, the old sight mounting channel and the front sight are not in a line, but as simple as it may be, I am not sure of how and what to measure to see what's bent...
After you've checked the front sight ,lay the straight edge along the receiver. In the unlikely event that it's bent, that fact will become obvious.
The rsb can't be off much. There isn't much clearance between the back of the rsb and the "ears" on the trunnion.
If the fsb is straight and the rifle worked with the standad sights, my guess is that something is off with the new sight. Check to see if the cover is on straight. Check to see if the cover is straight. Check to see if the sight is mounted on the cover straight and it's centered.
As a last resort, put the original rear sight on the rifle and properly zero it at 100y/m. Then put the new sight on. if the new sight is right, you should be able to zero the rifle without moving the front sight. If you can't the problem is probably with the new sight.
5/1/2010 10:31:38 AM
Originally Posted By POLYTHENEPAM:
After you've checked the front sight ,lay the straight edge along the receiver. In the unlikely event that it's bent, that fact will become obvious.
The rsb can't be off much. There isn't much clearance between the back of the rsb and the "ears" on the trunnion.
If the fsb is straight and the rifle worked with the standad sights, my guess is that something is off with the new sight. Check to see if the cover is on straight. Check to see if the cover is straight. Check to see if the sight is mounted on the cover straight and it's centered.
As a last resort, put the original rear sight on the rifle and properly zero it at 100y/m. Then put the new sight on. if the new sight is right, you should be able to zero the rifle without moving the front sight. If you can't the problem is probably with the new sight.
Originally Posted By barrysuperhawk:
Other than eyeballing it, is there a way to check the FSB?
Lay a good straight edge along the side of the receiver so it extends to the fsb. Measure from the edge to the fsb. Repeat on the other side of the rifle, making sure the straight edge is positioned so you're measuring to the same location on the fsb. If the measurements are not the same the fsb is not straight.
If the FSB was crooked, wouldn't the stock sights be F'd also? I would think so, but several things might be going on; 1.The difference in sight radius might make the problem more noticable. 2. Your comment about zeros and AKs indicates that the rifle might not have been zeroed properly before, perhaps due to unfamiliarity with the sights. This is especially true if you zeroed the rifle at short range.
The POI was about 10" left at 25 meters with everything centered.. With everything centered it is obvious the new rear sight, the old sight mounting channel and the front sight are not in a line, but as simple as it may be, I am not sure of how and what to measure to see what's bent...
Other than eyeballing it, is there a way to check the FSB?
Lay a good straight edge along the side of the receiver so it extends to the fsb. Measure from the edge to the fsb. Repeat on the other side of the rifle, making sure the straight edge is positioned so you're measuring to the same location on the fsb. If the measurements are not the same the fsb is not straight.
If the FSB was crooked, wouldn't the stock sights be F'd also? I would think so, but several things might be going on; 1.The difference in sight radius might make the problem more noticable. 2. Your comment about zeros and AKs indicates that the rifle might not have been zeroed properly before, perhaps due to unfamiliarity with the sights. This is especially true if you zeroed the rifle at short range.
The POI was about 10" left at 25 meters with everything centered.. With everything centered it is obvious the new rear sight, the old sight mounting channel and the front sight are not in a line, but as simple as it may be, I am not sure of how and what to measure to see what's bent...
After you've checked the front sight ,lay the straight edge along the receiver. In the unlikely event that it's bent, that fact will become obvious.
The rsb can't be off much. There isn't much clearance between the back of the rsb and the "ears" on the trunnion.
If the fsb is straight and the rifle worked with the standad sights, my guess is that something is off with the new sight. Check to see if the cover is on straight. Check to see if the cover is straight. Check to see if the sight is mounted on the cover straight and it's centered.
As a last resort, put the original rear sight on the rifle and properly zero it at 100y/m. Then put the new sight on. if the new sight is right, you should be able to zero the rifle without moving the front sight. If you can't the problem is probably with the new sight.
The "cover" has nothing to do with the rear sight, it's a separate piece, and fits into the slot at the rear of the receiver that normally accepts the back part of the recoil spring assembly. It fits tightly with no side to side play, and appears centered on the receiver.
