Mounting plate for the Holosun 509 series optics. The 509 ACSS is loner than the 509t. Although either optic will fit either plate, they are a better fit on their specific plate.
Mounting plate for the Holosun 509 series optics. The 509 ACSS is loner than the 509t. Although either optic will fit either plate, they are a better fit on their specific plate.
