These are Dawson Precision iron sights, sized to perfectly fit your Glock with a Holosun 509T optic cut.
The front iron will be a height of 0.205", width of 0.125". It can be purchased in black, Fiber optic, or tritium, which can be viewed from the link, here.
The rear iron will be a height of 0.225", width of 0.125". It can be purchased in black, Fiber optic, or tritium, which can be viewed from the link, here.
These are sourced outside of my supply chain, so there's an additional $8 shipping charge with these irons.
Please note: The original intent behind these offerings was to allow customers to order accessories while sending in their slides, ensuring a seamless alignment of timing. However, due to the recent increase in accessory-only purchases, we would like to clarify that, as a small business, we do not maintain an inventory, and our distributors do not offer direct-shipping services. Therefore, all items must be shipped to us first (which typically takes 2-3 days) before we can forward them to you. We appreciate your understanding and patience.