MOBILE PHONE SCOPE RAIL MOUNT
3D printed quick release mobile phone scope mount.
Allows most mobile phones to be attached to an air rifle scope rail.
Attaches to the 11mm scope rails rather than the scope itself.
There are many phone to scope mounts available but most seem to fit directly onto the scope eyepiece.
I don't like the idea of mounting a heavy smartphone to the end of my scope through a long extension eyepiece as it puts strain on the fragile eyepiece threads and scope body.
This bracket clamps directly to the scope rails with a quick release lever and the scope just has a light weight "lens hood" attached to it.
This also has the advantage of leaving any eyepiece adjustment free to use.
Scope without lens hood.
Lightweight tube lens hood slipped onto the rear of the scope.
On my scope the hood fits nicely onto the rubber eyepiece adjuster so turning the hood adjusts the eyepiece.
Alternatively the lens hood could be bonded to the phone case so there is no physical connection to the scope.
Lens hood tube bonded to a spare mobile phone case.
Mount in use with my rifle rest zeroing the scope.
Designed to fit my Reminton Airacobra it should be easy to modify it for other rifles using the included FreeCAD files.
Typical mobile phone view.
Close-up view showing fitting location.
Phone removed to show the mount in position.
The black tube lens hood only slides onto the scope and is not attached to the scope allowing focusing.
The only non 3D printed item is the universal tripod phone mounting bracket.
The Mount
The mount is made up from 4 main parts plus 6 minor parts.
The parts are reversible so the mobile phone can be mounted on either side of your rifle.
Left hand side view.
View from under the mount showing the lower thumbscrews.
3D Printed Parts
Major Parts
mount
The mount fixes to the 11mm scope mount via a quick release lever.
The left picture shows the rear of the mount (facing the barrel).
There are 2 recessed holes for the M3 Allen bolts that fix the mount to the mountbracket.
The recessed HEX hole allows is for the quick release lever fixing bolt.
The hole with slot above the V groove and slot allows the mount to compress and grip the scope rails when the quick release lever is closed.
mountbracket04noFillet
This bracket is bolted to the mount with 2 Allen bolts.
The mount is slotted to allow some up and down adjustment.
View from below the bracket shows the recessed slot for the M3 Allen bolt.
The recess keeps the metal bolt head off your stock.
mountBracketMobile02Fillet
This bracket is bolted through the slot of the mountbracket above through one of the three M3 holes.
The other end of the bracket has 3 slots. The 2 outer M3 slots are for fixing my bracketAngle.
The inner slot is wider and can be used for mounting a 3rd party tripod bracket if required.
A 3rd party tripod bracket can be mounted in the larger slot above.
If used then my bracketAngle will not be required.
bracketAngle
The bracketAngle is bolted with thumb nuts to the 2 slots on the mountBracketMobile02Fillet.
The 3rd party universal mobile phone bracket is then bolted to the tripod bolt sized slot on the bracket.
3rd party universal mobile phone tripod bracket
eyepieceSheild
Hides the view around the scope from the camera to give a nice black surround to the scope image.
The eyepieceSheild is optional and is just slid onto the end of the scope so it almost touches the phone bracket.
This allows the eyepiece to be rotated for adjustments.
Minor 3rd Party Parts
M3 quick release lever.
Fitted onto the mount provides a quick release to remove the complete mounting bracket from your rifle.
M3 Thumb Nut
Used on the adjustable parts for convenience.
Houses an M3 nut for tool-less tightening of parts.
File Download
All major parts including FreeCAD files can be found in a single zip file here.
