Adjustment mount under $10 each.

Fx no limit and other adjustment mounts can cost you $69 to 100 plus shipping fees. But I found these cheap adjustment mounts on eBay for only $9.99 each, with free shipping and no tax. They work great and feel solid. You adjust by turning a dial and use set screws to lock it in place. The will fit both 30mm or 1" tube. So don't matter what scope you have, it will fit it.

https://www.ebay.com/itm/NcSTAR-30mm-Adjustable-Height-Tactical-Weaver-Rail-Mount-Ring-w-1-quot-Insert-RAH24-/361525113547?txnId=1011764898023

Those who are worried they will cause damage to scope cause it won't tilt. You can take 2 pins out and it will tilt enough that it will not damage scope. Watch video to see how to take pins out. Skip to 4:00 to see how to remove pins for tilt.





http://m.youtube.com/watch?v=8y4nUkkUhoA





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1553537107_11974640625c991853c5a1a8.17880327_IMG_20190325_124355.jpg

 
How many screws on the cap? (2 or 4)

How many on the dovetail?

4 screws, 2 on each side. It does not fit dovetail.

Do they jus go straight up? The no limits also tilt so both don’t have to be at the same height.

They have a pin on each side. So it goes straight up. But take the pin out and it can tilt a bit. Check this review on it. It tells you how to take pin out to make it tilt.

http://m.youtube.com/watch?v=8y4nUkkUhoA
 
How many screws on the cap? (2 or 4)

How many on the dovetail?

4 screws, 2 on each side. It does not fit dovetail.

Do they jus go straight up? The no limits also tilt so both don’t have to be at the same height.

They have a pin on each side. So it goes straight up. But take the pin out and it can tilt a bit. Check this review on it. It tells you how to take pin out to make it tilt.



http://m.youtube.com/watch?v=8y4nUkkUhoA

The inside surfaces of both rings must be parallel to each other otherwise you will put uneven pressure on the scope tube and possibly damaging it. I think I would pass on them for scope mounting.


 
How many screws on the cap? (2 or 4)

How many on the dovetail?

4 screws, 2 on each side. It does not fit dovetail.

Do they jus go straight up? The no limits also tilt so both don’t have to be at the same height.

They have a pin on each side. So it goes straight up. But take the pin out and it can tilt a bit. Check this review on it. It tells you how to take pin out to make it tilt.





http://m.youtube.com/watch?v=8y4nUkkUhoA



The inside surfaces of both rings must be parallel to each other otherwise you will put uneven pressure on the scope tube and possibly damaging it. I think I would pass on them for scope mounting.


I guess you didn't watch video. The scope rings can tilt by removing 2 pins. You don't have to buy it if you want to spend $70 on fx no limit plus whatever shipping fee AOA/utha airgun charge. I'm just putting it out there so people can have budget adjustment rings and not have to spend close to $100 for them. They work great on my impact. I have not tested them on spring guns cause I don't own one and not a fan of Springers.
 
Doesn't look like pressure on the scope would be a problem if the pins are removed as OP notes. If you locked them down as the last step it looks like they would, to a great degree, self align to the body of the scope. The question would seem to be with the pins out how reliable would the lock mechanism be? I may try some of these-for the price why not? But I still like the SportsMatch fully adjustable rings because they have two opposed lateral locking screws like OP shows for these but they also have another lock screw in each base as well that is designed to be set as the last step after any adjustment and loosened as the first step before such. If the NcStar rings hold zero after locking, seems like they would be fine.

All above assumes TWO of the NcStar rings were used together. Using one with a different type of second ring might very well stress the scope body.
 
Just looked at the rings on ebay and a idea occurred to me. Seems it would be relatively easy to drill and tap the base for a second pair of locking screws. That would provide 2 locking screws on each side of each mount and MIGHT make them more reliable if indeed there is any issue with them holding zero. Then again, might not. For $10 it could be worth a try if necessary.
 
I have a problem that when I get rifles, I like to have the same scope on them all.. 
Last year, I decided to nix my Nikon scopes and go with Discovery optics instead.. 
That said, I'm on Disco scope # 2, and still 'need' 4-6 more [+2 for my 10/22s]
This gets Expensive. [And I'm not even close to being able to afford em all.. yet..]

An issue that I initially ran into..
With the 6x12 scopes at SHORT range [10 meter indoor target distance]
Neither scope would zero. They'd both run out of elevation adjustments..

I've only ever experienced that with shooting long-range.. 
Well, I guess it also applies for short range also. Sooo... 

Not really wanting to go the shimming route, and thanks to Hajimoto, 
I opted for a set of FX No Limit rings.. And they worked flawlessly! 
So, I had no choice but to order a second set for the second scope..

IMO [as a metal fabricator] there is NO reason the rings should cost as much as they do.. 
It's ridiculous. But.. FX knows that we need them, so, we are stuck paying the price..

I've got 2 more Nikon scopes up for grabs now, and hoping to get a 3rd Disco scope soon.. 
That said, I've been dreading having to bend over for another set of FX rings.. 
Coughing up around $100 hurts.. It hurts a Lot..

When I spotted these rings, the same thing went through my mind..
I see how they're intended to work, but, I fabricate and work with metal, so, I'll make em' work..
They're on order, so they'll be here waiting for the next Disco scope when I can afford that too..

It'll be interesting to do a side-by-side comparison of how the different companies designs work..

AND I had another idea.. Yeah.. I tend to have descent ones every now and then..

Since I already have 2 sets of No Limit rings: Four Rings Total..
Instead of using them as pairs, I'm curious if mixing and matching rings might actually work..

Because if it does, my TWO good sets might have just turned into FOUR good sets..

Maybe I'm over thinking it? Maybe I'm under thinking it? I'm not sure.. Lack of sleep does that to me..

Either way, I'll be messing around with all of them soon, and I'll try to remember to post back 
as soon as I figure out what seems to work the best..

ShinyKnight,

Thanks for the thread & Thanks for the video! They reinforced my initial ideas / thoughts about these..


🙂👍 

Sam -
 
I have a problem that when I get rifles, I like to have the same scope on them all.. 
Last year, I decided to nix my Nikon scopes and go with Discovery optics instead.. 
That said, I'm on Disco scope # 2, and still 'need' 4-6 more [+2 for my 10/22s]
This gets Expensive. [And I'm not even close to being able to afford em all.. yet..]

An issue that I initially ran into..
With the 6x12 scopes at SHORT range [10 meter indoor target distance]
Neither scope would zero. They'd both run out of elevation adjustments..

I've only ever experienced that with shooting long-range.. 
Well, I guess it also applies for short range also. Sooo... 

Not really wanting to go the shimming route, and thanks to Hajimoto, 
I opted for a set of FX No Limit rings.. And they worked flawlessly! 
So, I had no choice but to order a second set for the second scope..

IMO [as a metal fabricator] there is NO reason the rings should cost as much as they do.. 
It's ridiculous. But.. FX knows that we need them, so, we are stuck paying the price..

I've got 2 more Nikon scopes up for grabs now, and hoping to get a 3rd Disco scope soon.. 
That said, I've been dreading having to bend over for another set of FX rings.. 
Coughing up around $100 hurts.. It hurts a Lot..

When I spotted these rings, the same thing went through my mind..
I see how they're intended to work, but, I fabricate and work with metal, so, I'll make em' work..
They're on order, so they'll be here waiting for the next Disco scope when I can afford that too..

It'll be interesting to do a side-by-side comparison of how the different companies designs work..

AND I had another idea.. Yeah.. I tend to have descent ones every now and then..

Since I already have 2 sets of No Limit rings: Four Rings Total..
Instead of using them as pairs, I'm curious if mixing and matching rings might actually work..

Because if it does, my TWO good sets might have just turned into FOUR good sets..

Maybe I'm over thinking it? Maybe I'm under thinking it? I'm not sure.. Lack of sleep does that to me..

Either way, I'll be messing around with all of them soon, and I'll try to remember to post back 
as soon as I figure out what seems to work the best..

ShinyKnight,

Thanks for the thread & Thanks for the video! They reinforced my initial ideas / thoughts about these..


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Sam -



Amen. Working in manufacturing and engineering for a couple decades now, I can attest to the fact that many scope rings are way over priced for what they really are. Scopes on the other hand, not necessarily, because quality precision-ground glass with premium coatings requires premium tooling and equipment, premium time, premium QC, etc. But manufacturing scope rings is not rocket science, it is really a fairly easy and quick process.