Add a Holosun 509ACSS Optic Cut as a standalone upgrade to your Glock slide, or in conjunction with our other slide milling options.
This Optic Cut allows you to mount a Holosun 509ACSS sight directly to your Glock slide.
The cut features a precision CNC machined pocket into your slide. By design, the 509ACSS will fit tight within this pocket, preventing the sight from moving in any direction, ensuring your optic remains zeroed in even under the harshest conditions.
PLEASE NOTE: THE HOLOSUN 509T WILL FIT IN THE 509ACSS OPTIC CUT, BUT THE 509ACSS WILL NOT FIT IN THE REGULAR 509T CUT.
Due to the extended length of the 509ACSS, only the SETBACK and IRONS FORWARD configurations are possible with this optic cut.
*Optic not included.
