The best replacement for red dot is scope.

The best alternatives to red dot are rated as following:
★★★★★  scope
★★★★  reflex
★★★  holographic
★★  acog
★★  iron sights
★★  holographic sight
★★  green dot
★  reflex sight
★  reflex black ops
★  reflex sight black ops
★  scope ar15
★  eotech
★  holographic sights
  holographic ghosts
  black dot
  regular scope
  variable scope
  clays
  laser sight
  scope ar 15
  green dot sight
  1-4x
  holo sight
  green dot sights
  holo
  blue dot
  1-4x scope
  1-4
  holosight
  holographic mw2
  reflex sight cod
  reflex cod
  unique
  reticle
  laser sights
  rifle scope
  open sights
  4x32

Your alternative for red dot is not listed? Suggest!
Speaking about red dot, one probably shouldn't forget about magnifier.

Other search terms related to red dot and their ratings are:
★★★★★ magnifier
★★★ iron sights
★★★ white ring on skin
★★ front sight
★ astigmatism
★ red circle on skin
★ white circle skin
a2 front sight
night vision
scope
white circle on skin
white circle around it on skin
fixed front sight
You have in mind a companion for red dot and it is not yet here? Propose!



Google Trends

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red dot
scope
reflex