These are all tall sight listings.
 
If you get a Venom, Burris Fastfire, Romeo 1 or Deltapoint Pro optic cut and want the extra tall sights to co-witness, you will need to order from the Extra Tall sight options. Extar Tall sights only come in black. 
 
If you choose the Fiber front set option, please specify in the notes section at checkout if you want green or red fiber inserted. If not, the red fiber will be inserted. 
 
There is no additional charge to install the sights.