OPF-G, RMR (Optics Platform, Glock, for RMR) is a Glock MOS Adapter Set 01 compatible plate for mounting Trijicon RMR or SRO on Glock Gen 4 and Gen 5 slides, G17, G19, G34, G35, G41 (width 25mm/1 inch.) It is incompatible with G40 that uses Set 02.
We like the Glock MOS concept, even if we find the factory MOS adapter plates could use some help. Standards, commonality, availability of parts are all good things. Heretofore, users have had to send in their slides to be milled to accept mini red dot sights, or opt for 3rd party optics ready slides. The time it takes to send in the slides to be milled, and varying quality of the milling work and optics ready slides notwithstanding, there was a lack a standard regarding the sight height, it’d be a coincidence if two slides milled by two different shops share the same sight height. Glock’s MOS may not sit as low as some, but in our opinion, what MOS offers more than makes up for it, namely a uniform sight height, ease of installation, parts commonality and availability.
OPF-G, RMR is a collaboration with a USMC combat veteran and former USMC Shooting Team head coach, Tom Shields. We used Glock’s MOS adapter plates as a basis, and designed our version of what we think it should and can be.
OPF-G, RMR’s shape follows its functions, same as all of our products. We outlined the following objectives:
1. Sight is to be fully supported in the front and rear by recoil lugs/fences, with minimum movement.
2. Eliminate the need to use an additional sealer plate.
3. Correct length sight to plate, and plate to slide screws. Screws are to be Torx.
4. Adapter plate is to be machined in steel.
OPF-G, RMR accomplishes all of the goals outlined above. OPF-G, RMR’s thickness is unchanged from that of the Glock MOS plate, it doesn’t change the sight’s mounted height, nor does it require different iron sights.
As Trjicon RMR and SRO share the same mounting footprint, OPF-G, RMR is also compatible with SRO. However, due to the precise fit of the front and rear recoil lugs/fences that are designed to closely sandwich the sight, OPF-G, RMR is incompatible with Holosun sights. OPF-G, H will be available as a separate product.
OPF-RMR is shipped with plate to slide screws (M3-0.5mm x 6mm, same as what Glock MOS plates uses), and sight to plate screws (6/32 x 3/8), a T10 key and a VC3 packet.
Plate to slide torque value: 13 to 15in/lb
Sight to plate torque value: 13in/lb
Proudly designed and made in the USA.
NOTE: this version is incompatible with G40 (10mm) that uses Glock MOS Adapter Set 02.
OPF-G,RMR supports the full width of the RMR and SRO, a sealer plate is not necessary. If a sealer plate is used, it will reduce the thread engagement of the sight to plate screws for no gain. Trijicon’s guide line on whether a sealer plate is required: https://www.trijicon.com/frequently-asked-questions/category/rmr-faqs
OPF-G, RMR is designed to sandwich the sight in its front and rear fence, we make the spacing as close to Trijicon’s dimensions and tolerance as we can. Though we hold a 0.003 tolerance, Trijicon’s estimated tolerance is 0.005. In practical terms, this means while some RMRs will move inside the fences by a very small amount, others will need to be forced into the space.
Vibra-tite VC-3 is included with OPF-G, RMR. Instructions can be found here: https://www.vibra-tite.com/wp-content/uploads/213_tds.pdf
Vibra-tite also provides a video on the application of VC-3: https://www.vibra-tite.com/portfolio-items/vc-3-threadmate-overview-video/
For good printable 8×11″ RMR targets (1MOA dot, 2MOA dot, 6.5MOA dot at 100 yard, 50 yard, 25 yard, and 15 yard), please follow this link: https://www.barelytactical.org/targets/