Does this fit on a 20-30mm rail?
1822552
They do have long screws, but you're talking an inch wide. It seems like you are needing something the size of a M1913 Picatinny rail, and for that there are thousands of options.
1822553
What is 3/8" in metric ? 20-30mm is the length, width or thickness of your rail ?
2165683
I bought it for my Ruger 10-22 rifle---fairly universal for a normal sized rifle. I'd say your question depends on the size of your 20mm barrel --- sounds like this Harris product might be a bit small for that size of gun. You'd have to contact the Harris company to be sure.
560989
its meant to fit on a picatinny (not sure if thats correct) rail, but you may or may not need to buy some kind of conversion kit.Not sure if this will help
1374347
No, a dove tail rail is a thinner rail-unfortunately it's only going to fit grooved 20mm rails
168835
yes - larger rails are called weaver rails . look for scope mounts tat fit weaver rails .
2145861
If the rail mounts are standard or milspec which is 20mm they should fit just fine. They are difficult to get on. But that is a good thing in the sense a sight should be very snug to ensure long lasting accuracy. Knowing that AR platforms all generally run the same. Yes they will fit.
22326
I have mine on a KelTec PMR-30, fits and functions well. How long is your rail?
1072118
Yes, It will fit either 30mm or 1". You have to use adapter spacers that come with the scope for 1". Just be careful tightening down the scope clamps. Don't over tighten them or tighten them unevenly.
566006
The dust cover rail is the absolute worst option for mounting a sight, but yes it will fit on it. I highly doubt it will hold a zero at all though.
1072117
Yes. Of course always double check the specs. My AR optics scope is 30mm, so this mount works perfectly. Proper lapping makes the fit even better.
2117823
Probably not. It is threaded around the circumference and the likelihood that it is the same thread and diameter as some other rail seems very small.
445610
It will fit, but only the center screw is effectively used. Due to the smaller than typical rail, the center screw will need to screw in to the point of bowing the metal of the rail mount. Seems to fit solid, although it's off center by about 1/8" (to the left). Will not slide into the rail all the way since there is no "back notch" cut on the rail mount.
1253206
I am not familiar with that type mount but if it is like a Quad Rail it should fit just fine.
2249803
It will fit on any weaver railing..its small however,the rail will have to be close to the muzzle end of the firearm..it fits TIGHT on the rail..you really have to apply pressure to get it on the rail but once its on..its on..
1013981
I'm using it with a 30mm (http://www.amazon.com/gp/product/B001C5WMPI/ref=oh_details_o00_s01_i00?ie=UTF8&ps;c=1) and fits without a problem.
1013980
I'm using it with a 30mm (http://www.amazon.com/gp/product/B001C5WMPI/ref=oh_details_o00_s01_i00?ie=UTF8&psc=1) and fits without a problem.
2216706
To be true I don't know know but it fits my rail tight had some trouble sighting it in and it's on the heavy side