Notos Umarex notos top rail has slight movement, any suggestions? After market replacements?

[Murfdurf82]

The top rail over the barrel has slight side to side movement. Anyone ever tap and drill an extra screw further toward the front of the top rail into the block? For a plastic rail this doesn't surprise me, I'm at work just trying to brain storm the best way to fix the issue. It seems my scope moves on the rifle and it's not the scope.

 

[Neverman]

The top rail over the barrel has slight side to side movement. Anyone ever tap and drill an extra screw further toward the front of the top rail into the block? For a plastic rail this doesn't surprise me, I'm at work just trying to brain storm the best way to fix the issue. It seems my scope moves on the rifle and it's not the scope.

That's interesting because I own two Notos rifles and despite the fact that I have removed the barrel on both guns multiple times over the past 18-months, it always tightens down nicely when I put it back together. If I remember correctly, there is a small grub screw threaded through the top rail that primarily holds the barrel snugly in the correct orientation and location and then on top of that there is a regular hex-head screw that secures the barrel/top rail assembly to the rifle. My guess is one or both of these screws is either loose or partially stripped. From your post I have no way to determine your level of skill and/or experience working on air guns, so I apologize if my response is overly simplistic. This is a relatively well-made video that shows you how to completely disassemble and re-assemble a Notos. Use it if you need it to determine the health of the two screws I mentioned above. If either one isn't doing its job, the barrel and/or top rail will not be solid.

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[Murfdurf82]

That's interesting because I own two Notos rifles and despite the fact that I have removed the barrel on both guns multiple times over the past 18-months, it always tightens down nicely when I put it back together. If I remember correctly, there is a small grub screw threaded through the top rail that primarily holds the barrel snugly in the correct orientation and location and then on top of that there is a regular hex-head screw that secures the barrel/top rail assembly to the rifle. My guess is one or both of these screws is either loose or partially stripped. From your post I have no way to determine your level of skill and/or experience working on air guns, so I apologize if my response is overly simplistic. This is a relatively well-made video that shows you how to completely disassemble and re-assemble a Notos. Use it if you need it to determine the health of the two screws I mentioned above. If either one isn't doing its job, the barrel and/or top rail will not be solid.

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I'm thinking it's the top screw that's stripped. I have good quality scope mounts and 2 scopes that hold zero on other rifles and this is the only movement I feel is the rail so your probably correct.