Spuhr SP-4003B: 34mm Picatinny Mount 0 MOA - 1.5", Extended Housing

Spuhr : SP-4003B
*Discontinued model. See the updated version here
SPUHR SP-4003B - 34mm Picatinny Mount 0MIL/0MOA - 1.5"


Ring Size:  34mm
Tilt:  0 MIL/0 MOA
Height: 38mm (1.50in)
Length:  147mm (5.79in)

Spec Sheet (PDF)

For scopes with long erector housings such as U.S. Optics TPAL and Nightforce BEAST.

Distance from ring to ring is 82 mm/3.228".  



Prevents damage on scope due to flexing during heavy recoil or rough environment. The snipers rifle and the spotters carbine can have the same mount, enabling the use of same equipment and accessories. Rings are grooved inside to get a better grip of the scope and enabling gluing of the scope. The mount is milled out of one billet of material instead of being screwed together from small parts.

Scope Rotation

Patent pending solution for indexing the rotation of the scope, using an included tool/gauge to index the scope correctly to the mount and gun. Important since an incorrectly indexed scope unintentionally will also have a sideways adjusted point of impact and since it will be adjusted sideways when it is adjusted for elevation.

Mounting Placements

Traditionally lasers have been mounted on the forend of the rifle, a solution with drawbacks. For the same reasons you don′t want your barrel to touch the forend, you don′t want the sights to be mounted on the forend. Our mounting system has a minimum of seven interfaces for accessories and the laser can easily be mounted on the mount, giving the advantage of an undisturbed laser and a weight more central on the gun instead of forward.

Accessible and Readable Dials

The rings are cut 45 degrees instead of the usual horizontal, providing several advantages. The screws holding the parts together are not in the way of the knobs, thus the shooter can quickly determine the settings of the knobs. It also gives the shooter a horizontal line that helps the shooter not torotate his gun unintentionally. The rings have index marks on the top and right side, making low knobs more easily readable.


Possibility of using various accessories such as angle cosine indicator, back up sights, lasers, illuminators, Night vision mounts etc. With traditional mounts this can be achieved only if there is sufficient space on the middle tube for additional rings, which there rarely is. Ideal Scope Mount Systems have interface surfaces directly on the mount, making it possible to mount accessories either by Picatinny rails or as direct interfaces for certain accessories such as angle cosine indicators and red dot sights. A selection of interfaces for popular accessories are available, and others can be made to specification.




Write a Review
  • 5
    Spuhr SP-4003B

    Best mounting system out there!

  • 5
    Very Trick 1 Piece Alloy Mount

    Mounted a Nightforce scope on a Barrett rifle with this mount. Wanted a beefy aluminum alloy pic mount for this alloy receiver rifle. Mission accomplished!! This mount looks solid, feels robust while mounting, and seems to hold zero too. At least, it's been removed & re-installed once - with POI change. The scope leveling tool actually works - and their little on-board bubble level is a nice trick too. FYI, the screws are T20s, and the max torque on those 4 pic rail clamp screws is 45 in/ils.