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5/31/2026 10:31:05 PM EDT
bought one of these to put on a piggybacked RMR and the thing doesn't fit as snuggly as I thought it would. It snaps in place but a light bump or brushing it up against something will more than likely knock it loose. Anybody use one and have any good methods to securely attach it? Or is it one of those things that is better off left in the parts box?

ETA. I've thought about putting a piece of tape over the front and shooting acculuded but thought the cover would be better. This
6/1/2026 12:52:19 AM EDT
[#1]
Personally, I get the Opticguard covers on everything, plus the cover itself is designed to retain an ARD or the protective lens cover.  But they're also very unobtrusive due to their small size.  Here's some on my Holosun 507 and SCS including ARD that fits flush with the front of the cover.

https://opticgard.com/products/trijicon-rmr-scope-cover-tpu-material-by-opticgard

6/1/2026 6:16:35 AM EDT
[#2]
Quote History
Originally Posted By NorthPolar:
Personally, I get the Opticguard covers on everything, plus the cover itself is designed to retain an ARD or the protective lens cover.  But they're also very unobtrusive due to their small size.  Here's some on my Holosun 507 and SCS including ARD that fits flush with the front of the cover.

https://opticgard.com/products/trijicon-rmr-scope-cover-tpu-material-by-opticgard

https://i.imgur.com/VVJ3I7x.jpeg
View Quote

That looks like a much better design.
6/1/2026 6:51:25 AM EDT
[Last Edit: ScoutH57][Edited] [#3]
Are you trying to actually kill flash or just want a protective cover?

If you just are trying to add protection to it, you really don’t need it RMRs can take it.



https://onehundredconcepts.com/products/hexcap?srsltid=AfmBOoqKSZXz1srQ77qapzw57iRpeqOMgycADTIf3xykG1DADSYOEOzO&variant=51104754368824


I’ve stuck tape on them before during certain scenarios if I was concerned about flash.
6/1/2026 11:04:24 AM EDT
[#4]
Quote History
Originally Posted By gunner76:

That looks like a much better design.
View Quote


I was pretty surprised at how well thought out they are. They’ve got little lips to snap over the edges and screw holes to retain themselves on the optic, so it’s not just a friction fit.
6/1/2026 1:40:36 PM EDT
[#5]
Quote History
Originally Posted By ScoutH57:
Are you trying to actually kill flash or just want a protective cover?

If you just are trying to add protection to it, you really don’t need it RMRs can take it.



https://onehundredconcepts.com/products/hexcap?srsltid=AfmBOoqKSZXz1srQ77qapzw57iRpeqOMgycADTIf3xykG1DADSYOEOzO&variant=51104754368824


I’ve stuck tape on them before during certain scenarios if I was concerned about flash.
View Quote

^ +1 OneHundredConcepts RMR Cover is the way to go. I have a couple on Piggyback setups and they are tight/secure. Don't notice the ARD at all, not that you should
6/10/2026 7:01:08 AM EDT
[#6]
I like the Onehundredconcepts as well.   They snap on firmly and they are not going to fly off.   They’re tough so rack away that slide with no worries.   Good protection and works to stop reflection.  

Quote History
Originally Posted By Spdjunkie:

^ +1 OneHundredConcepts RMR Cover is the way to go. I have a couple on Piggyback setups and they are tight/secure. Don't notice the ARD at all, not that you should
View Quote

6/10/2026 8:11:48 AM EDT
[#7]
OK, I’m genuinely curious;

What’s the reasoning for putting a killflash on an RMR?

I understand the reasoning behind killflashes on riflescopes (avoid being spotted by 2 or 4 legged targets, due to the potential flash/reflection if the sun’s angle is just right/wrong), but my RMRs are all on pistols, or the Benelli, and none of those is really going to be used at longer ranges.
6/10/2026 9:28:07 AM EDT
[#8]
Quote History
Originally Posted By bluemax_1:
OK, I’m genuinely curious;

What’s the reasoning for putting a killflash on an RMR?

I understand the reasoning behind killflashes on riflescopes (avoid being spotted by 2 or 4 legged targets, due to the potential flash/reflection if the sun’s angle is just right/wrong), but my RMRs are all on pistols, or the Benelli, and none of those is really going to be used at longer ranges.
View Quote


Piggyback or offset mounting to magnified optics on rifles is a thing.
6/11/2026 9:47:54 AM EDT
[#9]
Quote History
Originally Posted By bkpkr:


Piggyback or offset mounting to magnified optics on rifles is a thing.
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Originally Posted By bkpkr:
Originally Posted By bluemax_1:
OK, I’m genuinely curious;

What’s the reasoning for putting a killflash on an RMR?

I understand the reasoning behind killflashes on riflescopes (avoid being spotted by 2 or 4 legged targets, due to the potential flash/reflection if the sun’s angle is just right/wrong), but my RMRs are all on pistols, or the Benelli, and none of those is really going to be used at longer ranges.


Piggyback or offset mounting to magnified optics on rifles is a thing.

Ah, good point.

I just found it odd for the pic above, on a pistol mounted RMR.
6/11/2026 11:03:33 AM EDT
[#10]
Quote History
Originally Posted By bluemax_1:

Ah, good point.

I just found it odd for the pic above, on a pistol mounted RMR.
View Quote


It helps with my astigmatism but I found it super annoying the last few range trips and removed them
6/11/2026 12:06:47 PM EDT
[Last Edit: bluemax_1][Edited] [#11]
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Originally Posted By NorthPolar:


It helps with my astigmatism but I found it super annoying the last few range trips and removed them
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Originally Posted By NorthPolar:
Originally Posted By bluemax_1:

Ah, good point.

I just found it odd for the pic above, on a pistol mounted RMR.


It helps with my astigmatism but I found it super annoying the last few range trips and removed them

The Killflash? If so, what was the cause of the annoyance?
6/11/2026 2:21:42 PM EDT
[#12]
Quote History
Originally Posted By bluemax_1:

The Killflash? If so, what was the cause of the annoyance?
View Quote


I think it might just be the optic guard ARD but it can make sighting more difficult. I think the honeycomb might just be too thick.
6/11/2026 3:14:22 PM EDT
[#13]
Quote History
Originally Posted By NorthPolar:


I think it might just be the optic guard ARD but it can make sighting more difficult. I think the honeycomb might just be too thick.
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Originally Posted By NorthPolar:
Originally Posted By bluemax_1:

The Killflash? If so, what was the cause of the annoyance?


I think it might just be the optic guard ARD but it can make sighting more difficult. I think the honeycomb might just be too thick.

Ah, noted.

I’ve used the genuine Tenebraex Killflashes on magnified scopes. They disappear in broad daylight, but it’s in the shoulder hours that I noticed they DO affect light input/image brightness.

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