Walther PPQ / Q4 / Q5 to Holosun 509T




**This plate will not work with the Holosun HE509-RD ACSS Vulcan
(5 customer reviews)

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The C&H Precision plates are designed, manufactured and shipped from our small family owned business in Coastal Georgia.  Each plate is precision machined to the tightest tolerances on HAAS CNC machines and each plate goes through multiple quality checks before shipping to our customers.


Thickness:  V4 MIL / LEO Plates are .095″ to .099″ thick

Material: Plates are made from 6061 aluminum.  All mounting hardware is Stainless Steel

Finish:  Plates are MIL-SPEC Type III Hard Anodized – Black

Replaceable 416 Stainless Steel T-Posts for maximum thread engagement


Qty 1 – Optic Plate

Qty 2 – M3 Mounting Plate Screws

Additional information




5 reviews for Walther PPQ / Q4 / Q5 to Holosun 509T

  1. montyrw2 (verified owner)

    Speedy service as always but I’m confused and slightly unhappy.
    Torque setting from Holosun says 15 in lbs from sight plate to gun but CHPWS says 10 in lbs with their provided hardware. My sight keeps coming loose even with the acetone cleaning, VC3 curing 20-30 minutes and torquing per CHPWS spec.
    What next?
    The sight to plate at 20 in lbs is fine.

  2. david.p.justus (verified owner)

    Ordered this for my Q4 M2 and my 509T. It does not sit flush with the plate and the Holosun adapter is needed as well sitting with it two adapter plates high. Had to use my other RMR 507.

  3. Cameron Alim (verified owner)

    I received the plate and it worked fine but I did not receive the Dawson front sight I paid for. I have emailed, called, and tried to leave voicemails to no avail. I decided today to take the hit and order it from Dawson directly.

  4. Cameron Alim (verified owner)

    The plate fits and works fine, but I ordered a front sight with the plate and never received it. I have called several times and no one answers. I try to leave a message and the mailbox is full. I have emailed several times and no response. This has gone on for a few weeks. Finally decided to take the hit and order it directly from Dawson Precision. If you order this plate DONT order the front sight with it!

  5. JOSE L MARZAN (verified owner)

    Ordered for my Q4 TAC with a 509T and was negatively surprised with the results. First, there’s a huge gap between the rds and the adapter plate and last but not least is that the integrated rear sight on the adapter plate is useless as the 509T is taller than the sight and thus can’t be used. I’ve been trying to contact Customer Help for an entire month with emails and calls and the voice box is full, they don’t answer calls nor emails. I’m happy with the adapter plates for the PDP and 43X but not with this one

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