The optic ready sights are the perfect height for the 43X MOS Rail with a mounting plate and Holosun 507K. The bottom of the rear sight notch is exactly at the edge of the Holosun making it in the lowest portion.

Ordered the optic height sights, fitment was great and easy instruction. Quality is great and cost was pretty fair and shipping was pretty fast. Tritium glows very bright at night no mistaking where your weapon is at night. Very pleased with the product and purchase, highly recommended this product and seller.

The sights are smaller than I thought they would be. I've shot the pistol once. Everything seemed fine. I just wish the sights were a little larger.

Took a bit of fitting to get the rear sights installed on the G19 but once installed they are the best night sights I've ever seen. SEEN is the operative word here,by far the easiest to see most visible tritium sights ever. Just love them. Perfect suppressor height,co-witness with my Red Dot.

100% awesome. Now able to co-witness with my micro red dot on my sub compact. If the red dot battery goes dead or red dot malfunctions, I am still able to use the tritium filled iron sights day or night.