An often asked question thus far is whether OPF-G6, RMR will fill the gap in front and back of the RMR on Gen 6 ORS slides. OPF-G6, RMR will fill the gap in front and rear gap. The 2020 to 2024 Gen 5 MOS RMR plates we made did use the front fence and it's functional, the latest 2024 and forward RMR footprint revision code 84 no longer uses the front fence to keep the sight immobile but has retained it for cosmetics. The rear fence on our Glock RMR plates is cosmetic and serves no real function, but both will be present on OPF-G6, RMR.
OPF-G6, RMR will require a sealing plate for RMR, we believe this is a logical and practical choice.
We had both the full width support version (requires no sealing plate) and the one we chose to be the production OPF-G6, RMR prototypes (without full width support) made. The full width support version is 0.07" thicker.
To us, it doesn't make sense to impose the 0.070" height penalty on RMR HD, RCR and SRO users that neither need nor benefit from having a full width support made just for the RMR. RMR users retain the lowered install height Gen 6 ORS provides by using a sealing plate. RMR HD, RCR, and SRO don't need a sealing plate, while all the sights sit lower by not having a full width support.
Gen 6 ORS pocket has a spindle shaped cavity/depression designed to prevent the plates from rotating, shifting longitudinally and laterally. There is also a small, 45 degrees rear locking tab to keep the rear of the plate down. All OPF-G6 plates have a bottom contoured to fit and fill out the spindle cavity, they also have a small relief in the rear to make use and engage the ORS pocket's rear locking tab. When installing OPF-G6 plates, the rear of the plate must be inserted into the rear ORS pocket at an angle, the front of the plate then can be rotated down into the pocket, the same way factory polymer inserts are installed. Glock Gen 6 ORS provides means to secure the plate in the ORS slide, OPF-G6 plates take full advantage of the tools Glock provides.
Due to Gen 6 ORS slide tolerances, a very small gap between the rear fence and the slide may be present. Both the front and rear fences of OPF-G6, RMR are cosmetic with our RMR plate design, so is the tiny gap.
Depending on the RDS, there may be a gap between the RMR, RMR HD, SRO and RCR and the rear fence, this too, is cosmetic. If we don't factor in sight tolerances, the plate would require fitting for many of the sights, or the sight simply will not fit.
The picture below shows an RMR (with a gap), and RMR HD (without a gap) on the same OPF-G6, RMR plate. If we made the plate for that specific RMR only, chances are 100% it will require extensive fitting to fit another RMR, or RMR HD and RCR. For law enforcement agencies with tens, hundreds or thousands of sights and our plates, when one sight is too tight (within tolerance), the armorer can simply grab another sight that fits the same plate better. Officers and civilian users that purchase their own equipment may not have the luxury. We can't forfeit compatibility for the sake of cosmetics that serve no purpose on a defense firearm.
Glock Gen 6 ORS uses a polymer insert in leu of an adapter plate. OPF-G6 RMR does not. The elasticity meant to provide upward tension from its elasticity also applies to the lugs on the insert, we don't want our lugs to give way and deform under sharp impact.
Our plates have never used or relied on upward tension to keep the plate-to-slide screws from loosening, we successfully use other means for the same end. With MOS, plate-to-slide screws are separate from sight-to-plate. With Gen 6 ORS, it's an insert with lugs, screws go through the RMR and DPP and directly thread into the slide. We don't want lugs to have elasticity or give, when that happens, the load is transferred to the screws, our plate is specifically designed to remove the load transfer to plate-to slide screws.
All OPF-G6 plates are milled in 17-4 stainless steel. 17-4 stainless is an option we've made available on many of our Gen 5 MOS plates for MIL and LE customers, it's standard on FCD Gen 6 ORS compatible plates. We don't believe aluminum is a suitable material for anything that can experience up to 1800G in recoil, especially for sights like P2 and MSP that use a cross bolt. A 1.2oz RMR weighs 112.5lb in 1500G of recoil. Will 7075 hold up, and to a lesser degree, will the softer 6061 hold up? We're not taking chances with aluminum. 17-4 SS is more expensive to source and time consuming to machine. Regarding construction and material, our position is rather cut and dry: zero compromise.
For Vibra-Tite VC-3 instructions and data sheet, please scan the QR code below.
RMR sealing plate is required only for RMR, and not required for RMR HD, SRO and RCR.
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