Description
The Spuhr SP-3601 is a one-piece ISMS (Ideal Scope Mount System) scope mount for Picatinny rails, built for 30 mm tube riflescopes. It places the scope centreline 30 mm / 1.18 in above the rail and has 6 MIL / 20.6 MOA of forward cant machined in, giving extra elevation travel for long-range shooting. Spuhr’s current marking for this mount is SP-3601M.
The mount is 126 mm / 4.96 in long and weighs 237 g / 8.4 oz, with 9 mm / 0.354 in of clearance between the bottom of the scope tube and the bridge of the mount body. It clamps to the rail with hardened steel side clamps and, since 2019, is supplied with five clamping screws to allow cantilevered mounting. A 10-degree wedge for levelling the scope is included, and the mount body carries Spuhr’s accessory interfaces for ISMS add-ons. Spuhr notes it will not fit the Sako S20 or rifles with two-piece rails.
- Spuhr ISMS one-piece Picatinny scope mount, model SP-3601 (current marking SP-3601M)
- Ring diameter 30 mm
- Height 30 mm / 1.18 in from rail top to scope centreline
- Cant 6 MIL / 20.6 MOA, engraved on the mount
- Length 126 mm / 4.96 in, weight 237 g / 8.4 oz
- Clearance 9 mm / 0.354 in under the scope tube
- Hardened steel side clamps, five clamping screws
- 10-degree levelling wedge included
FAQ
What scopes does the SP-3601 fit? Any riflescope with a 30 mm main tube. The 30 mm height suits scopes with objective bells up to around 50 mm on most rifles; Spuhr’s SP-3602 is the same mount at 38 mm height for larger objectives.
What rails does it fit? MIL-STD-1913 Picatinny rails. Spuhr states it will not fit the Sako S20 or rifles with two-piece rails.
What is in the box? The assembled mount with its top covers and clamping screws plus a 10-degree wedge for levelling the scope. Scope tools are not included; 3GT can fit your scope in store.
3 Gun Tactical is a licensed firearms dealer (Dealer Licence 50001578) in Tingalpa, Brisbane. Scope mounts and bases need no licence to purchase; we ship Australia-wide or you can collect in store.





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