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Posted: 2/1/2021 2:40:17 PM EST
[#1]
Quote HistoryQuoted: There are more MOS cuts too short than too long, but RMR on the + side of the tolerance is common, there are solutions for it. Relieve the front of the round recoil lugs (front of the lugs is flat), and if you mess up, we'll replace the plate all the same. When folks already have their minds made up and firmly believe Trijicon's tolerances above, and Glock's below our plate are our problem to solve, there are no workable solutions because everything is our fault, never mind we make neither the sight nor the slide. Quote HistoryQuoted: There are more MOS cuts too short than too long, but RMR on the + side of the tolerance is common, there are solutions for it. Relieve the front of the round recoil lugs (front of the lugs is flat), and if you mess up, we'll replace the plate all the same. When folks already have their minds made up and firmly believe Trijicon's tolerances above, and Glock's below our plate are our problem to solve, there are no workable solutions because everything is our fault, never mind we make neither the sight nor the slide. Quoted: Fingers crossed that doesn’t happen to me. The most unusual and least often occurrences happen to me. RMR gets here tomorrow. Mine was a little snug, but I got it all to fit just fine |
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Posted: 2/1/2021 2:49:51 PM EST
[#2]
Quote HistoryQuoted: What iron sights are those? Quote HistoryQuoted: What iron sights are those? Amerglo GL470 |
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Posted: 2/1/2021 6:08:37 PM EST
[#3]
Quote HistoryQuoted: There are more MOS cuts too short than too long, but RMR on the + side of the tolerance is common, there are solutions for it. Relieve the front of the round recoil lugs (front of the lugs is flat), and if you mess up, we'll replace the plate all the same. When folks already have their minds made up and firmly believe Trijicon's tolerances above, and Glock's below our plate are our problem to solve, there are no workable solutions because everything is our fault, never mind we make neither the sight nor the slide. Quote HistoryQuoted: There are more MOS cuts too short than too long, but RMR on the + side of the tolerance is common, there are solutions for it. Relieve the front of the round recoil lugs (front of the lugs is flat), and if you mess up, we'll replace the plate all the same. When folks already have their minds made up and firmly believe Trijicon's tolerances above, and Glock's below our plate are our problem to solve, there are no workable solutions because everything is our fault, never mind we make neither the sight nor the slide. Quoted: Fingers crossed that doesn’t happen to me. The most unusual and least often occurrences happen to me. RMR gets here tomorrow. Well @duffy I got lucky for once. I’m sitting waiting for the BROWN TRUCK OF HAPPINESS to arrive and I decided to set up my work station. Got the plate out of the box and test fitted it and it slides in with a satisfying little “click” but not too tight. Turn the gun upside down with no screws in and it doesn’t fall out. Awesome looking work. Cant wait to get my RMR on it tonight. |
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Posted: 2/1/2021 6:14:49 PM EST
[#4]
@Kiltakaze we don't do back orders so I don't think you're referring to us?
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Posted: 2/1/2021 6:16:04 PM EST
[#5]
Awesome, thank you for sharing your experience
 Quote HistoryQuoted: Well @duffy I got lucky for once. I’m sitting waiting for the BROWN TRUCK OF HAPPINESS to arrive and I decided to set up my work station. Got the plate out of the box and test fitted it and it slides in with a satisfying little “click” but not too tight. Turn the gun upside down with no screws in and it doesn’t fall out. Awesome looking work. Cant wait to get my RMR on it tonight. |
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Posted: 2/1/2021 6:19:19 PM EST
[#6]
Quote HistoryQuoted: @Kiltakaze we don't do back orders so I don't think you're referring to us? No that was CHPWS. You have been nothing but awesome for every order. Edited that post to clarify |
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Posted: 2/1/2021 6:59:59 PM EST
[#7]
Quote HistoryQuoted: Awesome, thank you for sharing your experience Quote HistoryQuoted: Awesome, thank you for sharing your experience Quoted: Well @duffy I got lucky for once. I’m sitting waiting for the BROWN TRUCK OF HAPPINESS to arrive and I decided to set up my work station. Got the plate out of the box and test fitted it and it slides in with a satisfying little “click” but not too tight. Turn the gun upside down with no screws in and it doesn’t fall out. Awesome looking work. Cant wait to get my RMR on it tonight. I’ll be sharing the gospel of the OPF-G |
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Posted: 2/2/2021 8:08:51 AM EST
[#8]
@Duffy
Since you guys generally stick to AR related stuff, do you have any plans to make RMR mounts for AR's? A lower 1/3 and an offset 45 would be killer. Personaly I would be in for a 45 mount (or two). Hell, you make it and send me one and I'll put it on my patrol rifle and test for you absolutely free of charge. I seriously am that nice of a guy. |
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Posted: 2/2/2021 8:36:00 AM EST
[#9]
Quote HistoryQuoted: @Duffy Since you guys generally stick to AR related stuff, do you have any plans to make RMR mounts for AR's? A lower 1/3 and an offset 45 would be killer. Personaly I would be in for a 45 mount (or two). An offset 45 at the equivalent height of 170 or 193 that supported the optic promoting return to zero after a battery swap would be legendary. |
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Posted: 2/2/2021 9:37:17 AM EST
[#10]
Quote HistoryQuoted: An offset 45 at the equivalent height of 170 or 193 that supported the optic promoting return to zero after a battery swap would be legendary. Glad you agree |
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Posted: 2/2/2021 10:09:21 AM EST
[#11]
Wasn't thinking about it, only we had a design for backup sights, then gave up on it because it'd be less expensive and better to just use an offset red dot sight. That was where the project had stopped, I didn't make the leap to designing an offset RMR mount because there are already many good choices in the space.
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Posted: 2/2/2021 10:23:34 AM EST
[#12]
Quote HistoryQuoted: Wasn't thinking about it, only we had a design for backup sights, then gave up on it because it'd be less expensive and better to just use an offset red dot sight. That was where the project had stopped, I didn't make the leap to designing an offset RMR mount because there are already many good choices in the space. "many good choices"... doesn't your business model revolve around making the best choices available? Just saying lol |
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Posted: 2/2/2021 10:45:40 AM EST
[#13]
Quote HistoryQuoted: Wasn't thinking about it, only we had a design for backup sights, then gave up on it because it'd be less expensive and better to just use an offset red dot sight. That was where the project had stopped, I didn't make the leap to designing an offset RMR mount because there are already many good choices in the space. Not a complaint, just thought it was funny, ordered my second RMR mount, cause it is hands down the best out there but check this shit out lol: Good ol' USPS, final destination is supposed to be near Austin:  Attached FileFuckers sent it to CT, NJ and NY to get their germs on it
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Posted: 2/2/2021 11:29:32 AM EST
[#14]
Sorry, should have taken only a day, you're only 35 minutes from us
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Posted: 2/2/2021 11:31:22 AM EST
[#15]
True, only if we can improve on it. I haven't been an offset red dot sight user so I need to do a lot more shooting with it first
Quote HistoryQuoted: "many good choices"... doesn't your business model revolve around making the best choices available? Just saying lol |
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Posted: 2/2/2021 1:15:44 PM EST
[#16]
Quote HistoryQuoted: Sorry, should have taken only a day, you're only 35 minutes from us Ya'll do physically ship alarmingly fast though, so there's that at least. Keep up the great work. |
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Posted: 2/2/2021 3:35:38 PM EST
[#17]
Quote HistoryQuoted: Not a complaint, just thought it was funny, ordered my second RMR mount, cause it is hands down the best out there but check this shit out lol: Good ol' USPS, final destination is supposed to be near Austin: https://www.ar15.com/media/mediaFiles/435001/screenshot_jpg-1807588.JPG Fuckers sent it to CT, NJ and NY to get their germs on it Mine took the scenic route also. It did get to me, it just wanted to go out east for some reason. 
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Posted: 2/7/2021 12:33:23 AM EST
[#18]
After getting caught up on this thread... I ordered 1 of Duffy's plate to replace my MOS plate.
Already shipped, Looking forward to it. |
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Posted: 2/7/2021 11:14:51 AM EST
[#19]
I mounted on the MOS plate first just to see the difference. It’s very obvious the FCD is just better made and thought out/designed.
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Posted: 2/7/2021 12:23:51 PM EST
[#20]
Someone on YT had made a comment on OPF-G, RMR's fences being cosmetic. I'm incredulous as to the amount and lack of depth of opinions founded on incomplete, or wholly absence of understanding of what causes screws to loosen and shear.
OPF-G, RMR has the same thickness and thread engagement as the Glock OEM plate. Whereas screws loosen and shear on optics mounted on OEM plates, they do not on ours. One might imagine that alone should be enough to validate OPF-G, RMR's design. These "cosmetic" fences have a purpose, that is to keep the sight immobile, and keep the sight to plate screws' role as they had been intended, which is to keep the sight down on the plate. The two recoil lugs alone are insufficient in keeping the sight from moving along the bore in recoil. OPF-G, RMR's front fence serves to tightly hold the sight on the plate, its rear fence is but a backup. No amount of increase in sight to plate screw strength, or thread engagement would solve the issue of screws loosening and shearing if the sight moves on the plate in recoil, these address but the symptoms of the cause, but never the cause itself. Past minimum thread engagement, there is precious little to no return. OPF-G, DPP does this even better. Whereas RMR has a +/- 0.005 tolerance, DPP is far tighter at +/- 0.002, and has 2x the number of recoil lugs. DPP literally snaps onto OPF-G, DPP. |
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Posted: 2/7/2021 8:32:14 PM EST
[#21]
I don't really need to read over this thread or know anything about micro red dots on pistols but when I'm ready I'll definitely go with FCD.
I'm thinking about the 43x/48 mos but if I grab a 19 I know this will be the mount. |
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Posted: 2/7/2021 9:53:34 PM EST
[#22]
43x/48 OPF-G plate was started months ago, just shipped the slide to the shop for prototype fitting.
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Posted: 2/7/2021 11:04:12 PM EST
[#23]
Quote HistoryQuoted: 43x/48 OPF-G plate was started months ago, just shipped the slide to the shop for prototype fitting. By the time I grab one and figure out the optic hopefully these are available. I'm going to be looking for something to offset on a rifle soon too so I need to research all this stuff but I'm definitely getting the plate from you guys. |
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Posted: 2/8/2021 12:11:35 AM EST
[#24]
Quote HistoryQuoted: Someone on YT had made a comment on OPF-G, RMR's fences being cosmetic. I'm incredulous as to the amount and lack of depth of opinions founded on incomplete, or wholly absence of understanding of what causes screws to loosen and shear. OPF-G, RMR has the same thickness and thread engagement as the Glock OEM plate. Whereas screws loosen and shear on optics mounted on OEM plates, they do not on ours. One might imagine that alone should be enough to validate OPF-G, RMR's design. These "cosmetic" fences have a purpose, that is to keep the sight immobile, and keep the sight to plate screws' role as they had been intended, which is to keep the sight down on the plate. The two recoil lugs alone are insufficient in keeping the sight from moving along the bore in recoil. OPF-G, RMR's front fence serves to tightly hold the sight on the plate, its rear fence is but a backup. No amount of increase in sight to plate screw strength, or thread engagement would solve the issue of screws loosening and shearing if the sight moves on the plate in recoil, these address but the symptoms of the cause, but never the cause itself. Past minimum thread engagement, there is precious little to no return. OPF-G, DPP does this even better. Whereas RMR has a +/- 0.005 tolerance, DPP is far tighter at +/- 0.002, and has 2x the number of recoil lugs. DPP literally snaps onto OPF-G, DPP. @Duffy Some people learn early, others later. Those in the know will know and spread it to others. I wouldn't worry about it Roger. Your products speak for themselves.  |
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Posted: 2/8/2021 10:24:39 AM EST
[#25]
Quote HistoryQuoted: ...Past minimum thread engagement, there is precious little to no return... Am I correct in remembering that figure to be equal to half the diameter of the threads of the screw? Like a 6-48 screw is 0.135" in diameter at the threads so once you reach 0.068" thread depth there is no increase in strength? |
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Posted: 2/8/2021 11:00:50 AM EST
[#26]
We will have a whitepaper in our FAQ section on the subject. The more informed the buyers, the better decisions they can make.
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Posted: 2/8/2021 11:02:53 AM EST
[#27]
@DOE I'm not concerned about them, it's curious how someone can be so wrong and still speak on the subject as though from a position of authority he couldn't be further from.
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Posted: 2/8/2021 11:48:08 AM EST
[#28]
Quote HistoryQuoted: @Duffy Some people learn early, others later. Those in the know will know and spread it to others. I wouldn't worry about it Roger. Your products speak for themselves. Quote HistoryQuoted: Quoted: Someone on YT had made a comment on OPF-G, RMR's fences being cosmetic. I'm incredulous as to the amount and lack of depth of opinions founded on incomplete, or wholly absence of understanding of what causes screws to loosen and shear. OPF-G, RMR has the same thickness and thread engagement as the Glock OEM plate. Whereas screws loosen and shear on optics mounted on OEM plates, they do not on ours. One might imagine that alone should be enough to validate OPF-G, RMR's design. These "cosmetic" fences have a purpose, that is to keep the sight immobile, and keep the sight to plate screws' role as they had been intended, which is to keep the sight down on the plate. The two recoil lugs alone are insufficient in keeping the sight from moving along the bore in recoil. OPF-G, RMR's front fence serves to tightly hold the sight on the plate, its rear fence is but a backup. No amount of increase in sight to plate screw strength, or thread engagement would solve the issue of screws loosening and shearing if the sight moves on the plate in recoil, these address but the symptoms of the cause, but never the cause itself. Past minimum thread engagement, there is precious little to no return. OPF-G, DPP does this even better. Whereas RMR has a +/- 0.005 tolerance, DPP is far tighter at +/- 0.002, and has 2x the number of recoil lugs. DPP literally snaps onto OPF-G, DPP. @Duffy Some people learn early, others later. Those in the know will know and spread it to others. I wouldn't worry about it Roger. Your products speak for themselves. As I said earlier I have spread the gospel of FCD. Coworker has a 34 with the DPP and is using the MOS plates. After seeing mine and how solid it is he says he will be buying one. |
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Posted: 2/8/2021 11:49:39 AM EST
[#29]
Thank you very much! You guys are a big reason OPF-G, RMR has done as well as it has, we are grateful
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Posted: 2/8/2021 12:22:03 PM EST
[#30]
Quote HistoryQuoted: I’m glad somebody thinks their stuff isn’t that good or close to equal to @duffy /FCD STUFF. A lot of the people in the Reddit forums act like they’re equals and some think better. I’ve researched extensively and any thing I put a red dot on will get FCD Would be really great if they made a popular compatible plate for the 508t or 509 so people without RMRs aren't SOL.  Going to try the OPFG with the shorter screws and see how it goes. |
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Posted: 2/8/2021 1:17:45 PM EST
[#31]
We have our reasons, these aren't appropriate for the tech forum so we don't talk about them here. Short of a large agency request and purchase order, it's a settled matter. H sights are authorized for some big agencies, which is a surprise to me but they didn't ask us, so we're not going there.
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Posted: 2/8/2021 3:51:43 PM EST
[#32]
Quote HistoryQuoted: We have our reasons, these aren't appropriate for the tech forum so we don't talk about them here. Short of a large agency request and purchase order, it's a settled matter. H sights are authorized for some big agencies, which is a surprise to me but they didn't ask us, so we're not going there. Word. I'll make it work |
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Posted: 2/8/2021 5:54:16 PM EST
[#33]
Ordered Friday; shipped Friday; received today, via USPS no less; I should have bought a lottery ticket at the same time. FCD has my future business if I have the need. Now just waiting for my G19G5 to arrive.
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Posted: 2/8/2021 6:31:33 PM EST
[#34]
Quote HistoryQuoted: Ordered Friday; shipped Friday; received today, via USPS no less; I should have bought a lottery ticket at the same time. FCD has my future business if I have the need. Now just waiting for my G19G5 to arrive. Eye candy for your wait...  
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Posted: 2/8/2021 8:44:09 PM EST
[#35]
Quote HistoryQuote HistoryQuoted: Quoted: Ordered Friday; shipped Friday; received today, via USPS no less; I should have bought a lottery ticket at the same time. FCD has my future business if I have the need. Now just waiting for my G19G5 to arrive. Eye candy for your wait... https://i.imgur.com/XkAcAeq.jpg?1 I’ll pile mine on. Need a TLR-7A. Didn’t like the x300 or TLR since not flush fit. 
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Posted: 2/8/2021 8:52:31 PM EST
[#36]
Got you covered
 I have an RMRcc on it now with the OPF-G, RMRcc plate, I quite like the smaller size. Attached File |
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Posted: 2/9/2021 8:42:04 AM EST
[#37]
Quote HistoryQuoted: 43x/48 OPF-G plate was started months ago, just shipped the slide to the shop for prototype fitting. So it’s really happening? I ordered another adapter plate for my G43X and it doesn’t fit...not even close. I think I’ll run irons until you plate is ready. |
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Posted: 2/9/2021 8:52:20 AM EST
[#38]
Quote History |
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Posted: 2/9/2021 9:44:04 AM EST
[#39]
The 43x/48 RMRcc adapter plate has compromises that seriously made me think whether we should do it. The plate will elevate the sight, and given RMRcc's small window, both the sight position and small sight window will make backup sights difficult to use. In exchange, you get to use a very rugged US made sight, so it's for those willing to accept the tradeoffs.
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Posted: 2/9/2021 9:59:03 AM EST
[#40]
After reading 34 pages, I'm convinced to order a plate for my new 19.5 MOS. The only question I have, which may not apply to the FCD plate would be is there a set of suppressor height sites it pairs well with?
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Posted: 2/9/2021 10:03:21 AM EST
[#41]
Quote HistoryQuoted: After reading 34 pages, I'm convinced to order a plate for my new 19.5 MOS. The only question I have, which may not apply to the FCD plate would be is there a set of suppressor height sites it pairs well with? My GL-429 from Ameriglo are perfect. All Black so no competing distractions with the dot. The sight once installed sits right above the front sight blade. Just needed very little adjustment. |
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Posted: 2/9/2021 1:04:58 PM EST
[#42]
Quote HistoryQuoted: Got you covered I have an RMRcc on it now with the OPF-G, RMRcc plate, I quite like the smaller size.https://www.ar15.com/media/mediaFiles/781/IMG_5850_JPG-1816986.JPG Get rid of that awful disgusting TLR-7 and replace it with a real light. TLR-7A. 
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Posted: 2/9/2021 1:45:43 PM EST
[#43]
Just got one it's coming today, the A variant wasn't an option last year
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Posted: 2/9/2021 1:54:56 PM EST
[#44]
Thank you. Ordered the Gl429 set to go with the plate.
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Posted: 2/9/2021 2:55:02 PM EST
[#45]
Quote HistoryQuoted: My GL-429 from Ameriglo are perfect. All Black so no competing distractions with the dot. The sight once installed sits right above the front sight blade. Just needed very little adjustment. I wish the rear was serrated. |
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Posted: 2/9/2021 8:20:44 PM EST
[#46]
Quote HistoryQuoted: I wish the rear was serrated. Quote HistoryQuoted: Quoted: My GL-429 from Ameriglo are perfect. All Black so no competing distractions with the dot. The sight once installed sits right above the front sight blade. Just needed very little adjustment. I wish the rear was serrated. Funny enough, that is my only complaint with them. |
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Posted: 2/9/2021 8:55:14 PM EST
[#47]
Dawson has some options
https://dawsonprecision.com/dawson-precision-glock-mos-fixed-co-witness-sight-set-for-trijicon-rmr-and-similar-red-dot-scopes/ |
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Posted: 2/9/2021 9:02:43 PM EST
[#48]
Quote HistoryQuoted: The 43x/48 RMRcc adapter plate has compromises that seriously made me think whether we should do it. The plate will elevate the sight, and given RMRcc's small window, both the sight position and small sight window will make backup sights difficult to use. In exchange, you get to use a very rugged US made sight, so it's for those willing to accept the tradeoffs. With suppressor hieght sights? Does it make grabbing aftermarket sights void? Just trying to figure all this stuff out as a shop by me usually has a 43x or 48 mos in stock when I stop in. I could just get a full size but with the new 15 round SA mags I'm thinking about making my first RDS glock a thin one with a new surefire coming up. It just seems like the way to go. Irons aren't a deal breaker but I'm partial to putting night sights on all my glocks and assume that I'll need a higher suppressor hieght for a RDS. Edit- maybe this is something else you could put on the drawing board if you have a shop capable sights that are made for mos glocks
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Posted: 2/9/2021 9:11:58 PM EST
[#49]
Suppressor sights should work, but we have no data on anything yet. The ability to use backup sights is important, most agencies mandate the pistol be equipped with backup sights if they have red dot sights.
G19 can use both the RMR and smaller RMRcc, suppressor sights for G19 are abundant, I think even with the wider slide and frame it's an easy choice over G48 given the ease of outfitting it as required. Against G43X though, the argument may be harder to make, but I don't write agency policies, procedures and manuals
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Posted: 2/9/2021 9:15:28 PM EST
[#50]
Quote HistoryQuoted: Suppressor sights should work, but we have no data on anything yet. The ability to use backup sights is important, most agencies mandate the pistol be equipped with backup sights if they have red dot sights. I see that the RMRcc doesn't fit on the 43x/48 mos without the adapters to raise it. I see now and will have to find out what I want to do. I'm thinking about other options as far as optics but I'm definitely going to look at your design if whatever I get has a FCD compatible plate. Edit- irons are definitely mandatory for anything other than a range toy. |
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