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MPRS | Multi-Purpose Sliding Rail

$90.00 to $140.00


Update July '22: The MPRS-40 is the recommended quick-release plate for use with the Canon RF 100-500mm f/4.5-7.1 L IS USM Lens.
The MPRS-40 and MPRS-80 are made for the Canon 800mm and 600mm F/11 prime lenses. These lightweight, extendable lenses makes proper balancing difficult; the MPRS-40 and MPRS-80 solve that problem by allowing the foot to slide back to the balance point when the lenses are extended for use, and forward when in the stowed position.

    • The MPRS-40 is best for lightweight setups like the RP or R6
    • The MPRS-80 is best for back heavy setups such as when using battery grips.


Since the lenses lack a collar, both plates include holes for mounting the optional L-plate to the foot, allowing quick and easy vertical orientation. 


  • 40mm of sliding travel (80mm for MPRS-80)
  • Thumb screw for quick adjustment
  • Laser markings for repeatable placement
  • Low Profile
  • QD socket
  • 3/8-16 mounting hole
  • 1/4-20 mounting holes for option L-plate
  • CNC machined 6061 Aluminum


  • Length: 4.45in / 113mm
  • Width: 3.80" / 96mm
  • Height: 3.57" / 91mm
  • Weight: 7.2oz / 204g

In the Box

(1) MPRS-40
(1) Canon VHS Pin Shuttle
(1) Thumb Screw
(2) Safety Stop Screws
(1) 2.5mm Hex Key
(1) MPRS-L
(2) 1/4-20 x .75" flathead screws
(1) 5/32" Hex Key