THIS PLATE REQUIRES A ROMEO 1 PRO OPTIC READY CUT WITH RMR HOLES, REFER TO THE PICTURES ABOVE TO VERIFY YOUR SLIDE HAS THE CORRECT HOLES AND CUT. IF YOUR SLIDE DOES NOT HAVE RMR / HOLOSUN THREADED HOLES OR NEEDS TO BE UPGRADED TO THE ROMEO 1 PRO CUT, CLICK HERE
This filler plate does not require any additional screws. It is held in place with the RDS and it’s mounting screws.
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.

SPECIFICATION:
Material: Plates are made from 6061 aluminum. All mounting hardware is Stainless Steel
Finish: Plates are MIL-SPEC Type III Hard Anodized – Black
INCLUDED:
Qty 1 – Optic Plate
Qty 3 – 6-40 x .380 M3H Trijicon RMR / RMR HD / SRO , Holosun 407C/ 507C 507Comp Optic Mounting Screws
Qty 3 – 6-40 x .460 M3H CHPWS COMP / EDC XL / COMP MAX Optic Mounting Screws
**Trijicon RCR**
The RCR Optic comes with Trijicon screws that are “Patented”. You must use the screws they provide you. C&H will not make new screws for this optic / plate combo. It is the responsibly of the consumer to check fitment of the provided screws for length. The screws may have to be slightly modified or shortened in order to ensure proper fitment.
DRY-FITTING DISCLAIMER:
At C&H Precision, our products are designed and manufactured to meet tight tolerances. Installation can be affected by variations in your plate, hardware, optic, and firearm tolerances. For safe installation and to prevent potential damage to any component, we advise dry-fitting all parts before a full installation. If any problems arise during this process, please reach out to our Customer Service via our
contact portal.
IRON SIGHTS DISCLAIMER:
When making aftermarket firearm modifications, factory components can often become obsolete, particularly when mounting optics on the slide, whether through direct milling or using a plate. Achieving the correct height for low co-witness iron sights depends on factors such as the firearm type, mounting plate, optic, and slide cut. For assistance in determining the appropriate iron sight height for your specific setup, please contact our Customer Service team through our dedicated
contact portal.
Andrew Eubanks –
Works as described. Excellent quality. No complaints.
robhenry7521 –
I was mounting a Trijicon SRO on a Sig 320. The folks at Trijicon recommended this filler plate from C&H. I emailed with Wes Mahr and he answered all my questions. I was concerned about the SRO overhanging the ejection port as some on YouTube had said that this may be an issue. Wes said they’d had no issues reported. I’ve got it all mounted up and with 100 rounds through it so far no issues. I love how the filler plate allows the optic to sit low and it’s a solid mount. These guys at C&H are super as is the service.
Rob H.
Anthony Cefalu –
Outstanding service. They responded quickly to my inquiries as to the proper plate for my pistol. Prompt receipt of item. Would do business with them again for sure. Tony C.
glenn-55 –
Excellent adapter plate for my Holosun HS407C-X2 mounted on my Sig P320 AXG. Adapter fit perfectly and the Holosun mounted flawlessly. Very easy to install. I like to use a dab of Locktite 243 then wait 24 hrs before shooting. Nice price for this adapter with fast shipping from C&H. Highly recommended.
rodgersfrank71 –
For the Holosun 507 comp everything fit mounting it on the sig 320 x compact. However ….. the screws shipped did not fit. Too long. So I took some of the shorter screws shipped with the Holosun. They are actually too short…. But I righted them and used blue lock tight and will check for movement over time. It seems like with all the sigs you must see over time, you could match your screws perfectly. I will be reluctant to order future products because of that. Hopefullly you can resolved those quality issues in the future.
C&H Precision –
Thank you for taking the time to leave us a review, we take every experience our customers have seriously. Can you please reach out to us on our contact portal so we can get a little more information? This way we can determine what adjustments might need to be made so this kind of think does not happen again.
Ian Jarrell
Customer Service Manager
C&H Precision, LLC