HRF Concepts ECS1 SwitchView Magnification Lever


The ECS1 (Enhanced Control Surface) Knob for SwitchView magnification levers* delivers a comfortable improvement to ergonomics in a compact package. The ECS1 Knob fits most Standard 3 Hole SwitchView levers including Sig Tango6 and Vortex Razor Levers and is only 1/5” longer than the original SwitchView lever.

(5 customer reviews)

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 Featuring HRF grip texture along the body and a concave top, the ECS1 Knob provides better dexterity and gives the user more control over the magnification levels. ECS1 Knobs for Eotech Vudu and Nightforce ATACR & NXS coming soon.


  • Material: Nylon Polymer
  • Weight: 0.18oz (5g)
  • Included Hardware: 6-32 1/2″ Set Screw
  • Instructions: Available Here
  • Color: Black
  • Made in the USA


  • Diameter: 0.75″ (19mm)
  • Height: 1.12″ (29mm)
  • Height Above Lever: 0.20″ (5mm)

** The ECS1 Knob does not include a SwitchView Lever and requires one to function.

Additional information

Weight 0.01125 lbs
Dimensions 5 × 4 × 1 in

5 reviews for HRF Concepts ECS1 SwitchView Magnification Lever

  1. orbiekrivers (verified owner)

    Super chonky and gives much more surface area which allows you to get more leverage

  2. Denton Petereit (verified owner)

    Doesn’t get any better, fast shipping. Great company

  3. connerhclark (verified owner)

    Just buy it. It makes using the switch view lever so much easier. Read the description, it doesn’t come with the lever, it’s just a knob; but it’s super easy to install and feels awesome, no rattling, feels like it’s part of the lever! Definitely a must have for your lpvo!

  4. Kyle Kuechel (verified owner)

    Super solid product. Don’t let the previous 1 star review sway your opinion. Reading comprehension is difficult. I put these on all of my 3 hole Vortex Switchview levers.

  5. Kevin Albers (verified owner)

    Just recieved it. It is only the lever not the ring. I’m sure it’s great, but now I gotta figure out what ring it will mount too. Officially zero steps closer to finishing this build.

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