TR-1upgrade® WULTRON™ Combat Sight Systems for Glock series
Called Wultron™, as per the illustrated logo, they look like a "W" which is formed by aligning the front sight with the rear sight, and this allows to see two triangles in the spaces formed by the front sight which is placed centrally in the rear sight tank. When the front sight is in an incorrect position, one of the two lateral triangles will immediately become small. This will allow the operator to instantly notice incorrect collimation and quickly correct it.
 
Characteristics:
Adnodized Aluminium
Combat style profile
2 sight kits available: 1 version with front sight and "Standard sides" Rear sight and 1 with front sight and "Short sides" Rear sight
Glock series compatible (With "Short Sides" Rear sight are Co-Witness for Glock Slim Slide MOS)
 
In the box:
Front sight 
Rear sight (choose Standard Sides or Short Sides)**