Glock REAR sight 11,9 GMS Steel set BLACK (4. F4)

Glock Original All Black Sights STEEL Glock REAR sight 11,9 GMS Steel set BLACK  (4. F4) GL1547074
Glock REAR sight 11,9 GMS STEEL BLACK incl Screw  (4. F4) 

Info about Glock sights:

The idea is that Glock front sight is fixed, and you change point of impact with the Rear Sights height.

Normal set-up with Glock (17, 19) Gen 1 to 4 is Front Sight 4,1mm, and Rear Sight is 6,5mm 

Normal set-up with Glock (17, 19, 45) Gen 5 is Front Sight 4,1mm, and Rear Sight is 6,1mm 

Normal set-up with Glock (20, 21) Gen1 to 4 is Front Sight 4,1mm, and Rear Sight is 6,9mm 

(If you still hit high, and you feel you need a even lower Rear SIght than 6,1 (that don´t exist), then you fix it with a 4,9 Front Sight and 6,5 Rear Sight. This will be like a "5,7" Rear sight)

When i comes to high sights aimed for pistol where silencer can be attached :

Normal set-up is Front Sight 9,1mm, and Rear Sight 11,1mm (Gen5) or 11,5mm Rear Sight (Gen2-4).

(If you still hit high, and you feel you need just a bit lower Rear SIght than 11,1 (that don´t exist), then you fix it with a 9,9 Front Sight and 11,9 Rear Sight. This will be like a "10,7" Rear sight)

Then, because our creator didn't make us all the same, there are other heights of front and rear sights to adjust for our different point of view...