Rainier Arms x Forward Controls Design OPF-RA Optics Platform For Glock Gen 5 MOS - Trijicon RMR

OPF-G, RMR (Optics Platform, Glock, for RMR) is a Glock MOS Adapter Set 01 and Set 02 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.) and G40 that uses Set 02.  Glock's OEM MOS plate's width matches that of the slide, but OPF-G, RMR is already wider to fully support the RMR, thus it is compatible with all MOS equipped Glock slides.

They like the Glock MOS concept, even if they 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 their 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. They used Glock's MOS adapter plates as a basis, and designed their version of what they think it should and can be.

OPF-G, RMR's shape follows its functions, same as all of their products.  They outlined the following objectives:

• Sight is to be fully supported in the front and rear by recoil lugs/fences, with minimum movement.
• Eliminate the need to use an additional sealer plate.
• Correct length sight to plate, and plate to slide screws.  Screws are to be Torx.
• 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.

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.

Specifications:

• Weight: 0.83oz
• Plate to slide torque value: 13 to 15in/lb
• Sight to plate torque value: 13in/lb

Please Note:

• OPF-G, RMR is designed for Trijicon RMR and SRO.  If you use a Holosun and the long set of screws with OPF-G, RMR, you will risk damaging the plate.  We do not support any Holosun sights for use with OPF-G, RMR,
• Trijicon's tolerance between the recoil lugs to the front radiused edge of the RMR is +/- 0.005.  While every OPF-G, RMR has been tested on our RMR and SRO, there is always a chance it might not fit your RMR/SRO without fitting.  OPF-G, RMR's design cradles the sight tightly on the plate between the plate's front and rear fences,  some fitting may be required.  A competent gunsmith can do it easily if you're uncomfortable with fitting the plate to your sight.
• OPF-G,RMR supports the full width of the RMR and SRO, a sealer plate is not necessary. Trijicon's position is that if the user is unsure, use the sealer plate, and the plate is so thin, if it is used it doesn't make any difference to the thread engagement.