Glock polymer sight:  0 fixed 6.9mm rear (std height on G20, G20SF, G21, G21SF, G29, G29SF, G30, G30SF, G31, G32, G36)

• This replacement part is a factory original from Glock. Factory replacement parts are manufactured to the exact same specifications and tolerances and use the same manufacturing materials as the original parts which guarantees excellent fit and reliable operation.