RMR to Holosun 407K / 507K



(4 customer reviews)

In stock

Frequently Bought Together

Price for both: $81.90

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.

Most of our plates feature a patented stainless steel T-Nut which provide an industry leading six to seven threads of engagement.  Since all the mounting hardware is replaceable, if any mounting hardware is damaged it can be replaced without replacing the entire plate.


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 – 4-40 Optic Mounting Screws

Qty 2 – 6-32 Plate Mounting Screws

Qty 2 – Patented 416 Stainless Steel T-Nuts

Qty 1 – VC3 Thread Locker

Additional information


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4 reviews for RMR to Holosun 407K / 507K

  1. t.j.young86 (verified owner)

    The good: Product fit great!
    The ok: The RMR screws fit perfect but the plate to the slide screws didn’t and no additional screws sizes were offered.
    The bad: I paid for $20 for 2 day air shipping, received it a week after purchasing. I’ve emailed and called numerous times about a possible refund for not receiving my product as I paid for expedite shipping with no reply back.

    I would recommend the product but not the expedited shipping and research additional screws for your pistols slide.

  2. rapparlie88 (verified owner)

    This is the only reliable (possibly the only, period) adapter plate for the 507k/407k from the rmr footprint. Tested on a top mounted lpvo on a zastava npap for 500 rounds (as is tradition before its put on an AR) with no loss of zero. Well done as usual!

  3. jmgomolka (verified owner)

    The RMR to 407k adapter plate worked great. The fitment was perfect, nice an tight, Tight fit to slide, (the slide is a Alpha Shooting Sports, Conqueror), 407k fitment was perfect and the sides of the plate fit flush with the sides of the slide. Just two nit picky comments, The finish machining on the sides of the adapter is visible, The sides of the adapter plate is about the only thing readily visible of the adapter and a little more time spent cleaning up the sides would make the whole adapter look better, And holding the T studs in the adapter while fitting the adapter to the slide was a bit of a challenge. I used screws and some small washers over the T studs to hold the T studs to the adapter, while fitting it to the slide it worked great. Other than those two comments I would have rated it 5 stars.

  4. RICK URABE (verified owner)

    I had to wait to place my order for this plate (OUT OF STOCK) for my Holosun 507 K (green retricle), but it was worth the wait. It was a perfect fit to my RMR cut Glock 19 slide from Rocky Brass! Great sight and plate! Thank you CHPW!

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