Ajack 4x90 help

Verner L.

Member
Hello.
I would like to ask for your help and some advice.
I bought an Ajack 4x90 with the serial number 47292+ and the weapon number on the ring - 22868.
I plan to repair the riflescope, fit the missing mounting parts to it and I would like to mount it on a K98.
But I am not sure if it belongs on a low tower or a high tower. The lower cone of the front ring does not have 4 screws from the bottom.
I would also like to know which manufacturer and which year of manufacture to mount the riflescope correctly. I assume that these are the manufacturers "ce" and "byf". Are there any other possibilities of K98 manufacturers on which these riflescopes were mounted?
The riflescope is missing the ring with the distance numbers 1-8 and the cap with the screws. Someone ground the front cone of the mount with a grinder and the rear leg is damaged. The riflescope was mounted by a hunter on a Mannlicher Carcano 91 rifle. I believe that I will be able to repair the cone of the mount to its original condition.
Thank you very much for your help and greetings from the Czech Republic.
PS: I can't upload full-size photos here, so I can send more by email.
 

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This is a former High Turret scope.

The rifle serial was 22868i, note the "i" above the serial number. That is one of the very few blocks where the serial suffix was also placed on the scope rings. It therefore originated from a byf44 coded K98k.
 
This is a former High Turret scope.

The rifle serial was 22868i, note the "i" above the serial number. That is one of the very few blocks where the serial suffix was also placed on the scope rings. It therefore originated from a byf44 coded K98k.
I think you mean a byf43 rifle. Byf44 i block's don't have the letter prefix on the scope ring (at least none I've ever seen).
 
Thank you very much for the advice and information so far.
I'm solving a bit of a dilemma. Some handyman came up with the front ring. I plan to have it repaired. But I'm not sure if it will fit exactly in the replica assembly. I ordered a new steel set of a high tower from France, but I'm not sure if it will be compatible with the original rings.
I will have the gun both for my own enjoyment, and I also plan to use it on a shooting range or reenactment.
The scope definitely needs to be disassembled, cleaned and needs a new surface treatment. I just don't know if it wouldn't be better to replace both rings and put the new ones on the scope straight away, which are part of the new set. My original rings don't have such rough traces of machining as on later Ajack scopes.
If I were to replace the rings, do I have to strictly adhere to the production series K98 byf 43 or can I possibly use them on byf 44? Would you stamp the gun number on the new rings or leave them without numbers? Is there anything special that a rifle should meet for this type of scope or mount, besides perfect technical condition? I'm not sure if I can get a completely numbered piece, but I assume that the safety will definitely be modified and the shoe will be replaced with a grooved model. Thank you very much for your opinions.
 
Hello again after a while. I would like to ask. I may have a little problem. While cleaning my riflescope, the optician turned the turret of my AJACK4X90 riflescope with the locking screw forward. Originally, before the refurbishing, I had the locking screw facing backwards. I looked at the original riflescopes and both variants are common. Even the description on the turret is always oriented the same way. A fellow riflescope expert pointed out to me that the scale numbers 1-8 are oriented differently, either outwards or inwards. I would like to know why this was the case, is there any explanation why some riflescopes have the screw facing forwards and some backwards? Is this a mistake or should I not solve this problem at all? Thank you very much for the answers.
 
This is a pretty good question. Looking at the picture reference, there is no standard orientation for the lock screw. Having had them apart, they are bidirectional. As strict as the Germans were, is this something that happened post war during servicing? It would not be uniform on a production line to have either/or.
It makes no difference in function although that might be model specific.
 
Thank you for your answer. I am surprised that the Ajack 4x90 riflescopes on the turret mount in found condition that have obviously not been reconditioned have a screw both in the front and in the back. I would understand if it would be a problem when attaching to a different type of mount. I also find it strange that even though it has no effect on the function, I would like to know why it is not oriented in only one direction.
 
Hello again after a while. I would like to ask. I may have a little problem. While cleaning my riflescope, the optician turned the turret of my AJACK4X90 riflescope with the locking screw forward. Originally, before the refurbishing, I had the locking screw facing backwards. I looked at the original riflescopes and both variants are common. Even the description on the turret is always oriented the same way. A fellow riflescope expert pointed out to me that the scale numbers 1-8 are oriented differently, either outwards or inwards. I would like to know why this was the case, is there any explanation why some riflescopes have the screw facing forwards and some backwards? Is this a mistake or should I not solve this problem at all? Thank you very much for the answers.
The fellow collector who told you that it had to do with orientation of 1-8 is correct .Here are pics showing the difference in range dials
 

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Excellent info Dave. I knew there had to be a reason, although if a dial has 4 numbers or 10 why would it change the lock screw orientation?
Strange, as organized as they were, this wasn’t standardized.
 
Excellent info Dave. I knew there had to be a reason, although if a dial has 4 numbers or 10 why would it change the lock screw orientation?
Strange, as organized as they were, this wasn’t standardized.
Rick what I have found is that the Earlier Ajack Scope which have the 1-8 range dials have the locking screw facing forward and the Later Ajack Scope have locking screw facing rearward . I do not know exactly were the braking point is when the locking screw went from facing forward to facing rearward but from my findings it is or appears to be somewhere around 43xxx to 46xxx .

I would be interested to hear what others may have found as to what range this change over occurred
Another mystery to solve just what we need :rolleyes:
 
I have no data, but I having used them in the field and range it's a lot less of a hassle to adjust when its facing rearward then forwards. Requiring less reaching forward or pulling the rifle out of a shooting position to see.

I wouldn't be surprised if it was feedback from soldier use.
 
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I have no data, but I having used them in the field and range it's a lot less of a hassle to adjust when its facing rearward then forwards. Requiring less reaching forward or pulling the rifle out of a shooting position to see.

I wouldn't be surprised if it was feedback from soldier use.

I agree , it was done for some reason and that is a plausible possibility .
 
Actually it is pretty easy. The numbers on the elevation disc are always engraved in the way that when facing at the locking screw/setting mark the shooter (when looking from the rear) they are readable for him. So either readable from front or from rear, and always corresponding to where that locking screw is.
 
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