Why are Trijicon RMR and SRO optic cuts separated as well as the Holosun 407C/507C/508T optic cuts on the website?
This is a very common question that we come across quite a bit. To get a better understanding of why things are the way that they are on the website we have decided to start this blog post to go into more depth on specific topics.
The Trijicon RMR footprint is going to be the same as the SRO. The reason that these are separated on our website is because the RMR will have options that apply to it that the SRO does not. One example is the sealing plate. The sealing plate is a thin piece of stainless that makes the RMR optic waterproof. Because the RMR is a bottom loaded battery it is exposed to the elements. We recommend the sealing plate for $10 to better protect your optic. Keep in mind that the SRO is a top loaded battery and it does not require a sealing plate. This has nothing to do with our milling but everything to do with the width of the slide that the RMR is going onto. There is a small amount of overhang on the Glock 19 size, P320, VP9, etc.
Another option that applies to the RMR that does not apply to the SRO is going to be dovetail location. You can run a Rear Dovetail on the SRO, but you cannot run a Forward Dovetail due to the overhang on the optic. Since we have them separated on the website this will not create any accidental ordering and milling of a Forward Dovetail/SRO combination.
So that should clear up most of the questions on why the RMR/SRO are going to be separated.
Now to touch on the Holosun 407C/507C/508T’s.
The milling program for these optic cuts are going to be exactly the same. However, due to the optic body shape and sizing we are going to have to use 5/16” screws on the Holosun and then 7/16” on the RMR/SRO’s.
If you were to use the longer screws on the Holosun you would have extraction issues on Glocks, loose mounting on VP9’s, CZ’s, P320’s, etc.
To keep our assembly team happy we decided to keep these separate on the invoices. When we go to assemble slides and the customer does not include the optic we are able to provide the exact screws needed to mount their optic when they get their slide back.
So all in all, it comes down to ease of assembly, less confusion on the customer service end, and our ability to provide you the best screws available on the market.