Install the HE509T directly to your 9mm or .40 MOS slide with the Holosun 509 Adapter for MOS and save rail space. These Red Dot Sight Mounts designed by the experts at Holosun are specifically designed to fit the HE509T red dot sight, which uses a re-zeroing target after sight alignment. Using the Holosun HE509T Adapter Plate greatly increases the accuracy of your pistol – a sight that’s especially good for beginners in the field since it doesn’t require as much sight adjustment as other optics systems. This 1 oz. steel plate ensures the Holosun 509 HE509T Adapter for MOS Slide will hold up under all the recoil you deliver. When you need to mount a sight to your pistol, this Holosun 509 MOS Adapter Plate is a necessary tool for the job. Speed up your acquisition time and ensure a tighter tolerance than ever before by using this Holosun 509 HE509T Adapter Plate. Specifications for Holosun 509 Adapter for MOS: Manufacturer: Holosun Color: Black Gun Type: Pistol Fit: Glock Modular Optic System Length: 1.9 in Height: 0.15 in Weight: 1 oz Fabric/Material: Steel Width: 1 in Optic Cut: Holosun HE509T Gun Make: Glock Red Dot Sights-Footprint: Holosun 509T Attachment Type: Slide Features of Holosun 509 Adapter For MOS: 1 oz Steel Plate MOS slide to HE509T interface Package Contents: Holosun 509 Adapter For MOS
Steven –
So I bought a 34 MOS a few months after getting the 509 and was pretty upset that I wouldn't be able to mount the sight with standard MOS mounting plates. As I quickly learned: the 509 is a relatively new mounting challenge and as of this writing the options are pretty limited, and expensive. Thankfully, Holosun understands this and has released a plate for their product at a reasonable price. The way the 509 is designed means it will sit pretty high compared to the RMR, that we are all familiar with at this point. This plate is simple and keeps it as low as can be expected. It comes with good hardware and I haven't had any issues with corrosion. If you jumped on the 509 train but have a bunch of MOS pistols, this plate is a good one. In case it helps your decision making process, my 34 is in a Recover Tactical brace and the sight is basically the only means I have to run the slide so the mount gets torqued on a bit pretty regularly; zero stays put.
SMILEZ1 –
ITS A HOLOSON PLATE I NEVER USED IT. WHEN I TRYING TO GET A PLATE FOR MY 509T I CALLED HOLOSON AND THEY SAID THEY HAD A PLATE BUT REFERRED ME TO GET THE CALCULATED KINETICS DOGTAG WHICH IN MY OPINION IS THE BEST PLATE ON THE MARKET HANDS DOWN. CONSTRUCTION BETTER MADE FROM STEEL HAS BUIL IN RACKER. LOVE IT
BCA –
You'll need this in addition to the Holosun 509T to mount it to your Glock 19 MOS. It's quality and works perfectly. My one complaint is that it doesn't fit the Glock slide contour. It's slightly narrow. Makes me think it might collect dirt or moisture along the edges.