Warning

 

Close
Confirm Action

Are you sure you wish to do this?

Cancel Confirm
AR15.COM
11/17/2025 1:20:49 PM EDT
I'm thinking of a red dot on my CDS9. My question is, do you leave it on all the time or just when you need it which sounds bad "when seconds count".

Joe
11/17/2025 1:26:15 PM EDT
[#1]
You leave it on all the time.  If it has shake awake, that will help save battery when you're not carrying it at least, but otherwise it needs to always be on and ready.

MRDSs that don't do this are delegated to range toys only.
11/17/2025 1:32:52 PM EDT
[#2]
Quote History
Originally Posted By D_Man:
You leave it on all the time.  If it has shake awake, that will help save battery when you're not carrying it at least, but otherwise it needs to always be on and ready.

MRDSs that don't do this are delegated to range toys only.
View Quote

correct
11/17/2025 2:14:48 PM EDT
[#3]
I think most are “shake awake” anymore.
Weekly dusting is a must.  
They are like a dust magnet.
If life was easy nobody would quit.
11/18/2025 3:50:33 PM EDT
[#4]
I use Trijicon RMRs, RCRs, and SROs.  I leave them on, second highest setting, 24/7.  I also change the batteries January 1st every year.
11/18/2025 3:51:40 PM EDT
[#5]
Forgot to mention, I turn off optics that aren't being carried.  As in, I have a Glock 19, Glock 26 and Staccato in rotation.  Which ever is getting carried ... optic on.  Everything else ... optic off in safe.
11/18/2025 11:30:58 PM EDT
[#6]
I leave all of my red dot sights on all of the time.
12/4/2025 9:57:47 PM EDT
[#7]
YEP AND CHANGE YOUR BATTERY ONCE A YEAR, REGARDLESS OF HOW LONG THE MANUFACTURER CLAIMS IT WILL LAT
12/5/2025 6:04:00 PM EDT
[Last Edit: dmk0210][Edited] [#8]
Quote History
Originally Posted By Wandell:
YEP AND CHANGE YOUR BATTERY ONCE A YEAR, REGARDLESS OF HOW LONG THE MANUFACTURER CLAIMS IT WILL LAT
View Quote


Also, keep in mind that with a CCW, your "shake away" optic is being shaken awake all day long. So it's pretty much just 'on' all day long. All it's doing for you is sleeping at night.

I don't see shake awake as a big deal for a CCW. Now for a home defense / night stand gun, yeah that's helpful.
12/5/2025 6:05:23 PM EDT
[#9]
If you buy a good optic, the batteries last an outrageously long time.
12/12/2025 9:10:26 AM EDT
[#10]
Quote History
Originally Posted By DVCER:
I think most are “shake awake” anymore.
Weekly dusting is a must.  
They are like a dust magnet.
View Quote

I use a qtip
12/12/2025 1:36:30 PM EDT
[#11]
Quote History
Originally Posted By GSPatton:
If you buy a good optic, the batteries last an outrageously long time.
View Quote


I’m still using a dirt cheap Riton (99 bucks) you guys posted as a deal.  The battery is a pain to change but it makes a tiny package stowed underneath.  And the dang battery refuses to die.  Changed it once in 5 years.

Attached File

If life was easy nobody would quit.
12/17/2025 11:06:50 AM EDT
[#12]
Leave on all the time.  Change batteries on your birthday.
4/17/2026 5:35:43 PM EDT
[#13]
Quote History
Originally Posted By DVCER:
I think most are "shake awake" anymore.
Weekly dusting is a must.  
They are like a dust magnet.
View Quote
I use the canned computer keyboard cleaner on my open emitter optics. Couple quick sprays and it's clean.
4/20/2026 11:33:23 AM EDT
[#14]
Quote History
Originally Posted By dmk0210:


Also, keep in mind that with a CCW, your "shake away" optic is being shaken awake all day long. So it's pretty much just 'on' all day long. All it's doing for you is sleeping at night.

I don't see shake awake as a big deal for a CCW. Now for a home defense / night stand gun, yeah that's helpful.
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By dmk0210:
Originally Posted By Wandell:
YEP AND CHANGE YOUR BATTERY ONCE A YEAR, REGARDLESS OF HOW LONG THE MANUFACTURER CLAIMS IT WILL LAT


Also, keep in mind that with a CCW, your "shake away" optic is being shaken awake all day long. So it's pretty much just 'on' all day long. All it's doing for you is sleeping at night.

I don't see shake awake as a big deal for a CCW. Now for a home defense / night stand gun, yeah that's helpful.


Shake awake is stupid anyway. It's one more thing to not work and makes zero sense when battery life is measured in months or years when constantly on.
4/28/2026 9:42:15 PM EDT
[#15]
Quote History
Originally Posted By D_Man:
You leave it on all the time.  If it has shake awake, that will help save battery when you're not carrying it at least, but otherwise it needs to always be on and ready.

MRDSs that don't do this are delegated to range toys only.
View Quote


i AGREE.
4/28/2026 10:22:35 PM EDT
[#16]
shake awake is the way
"I do not love the bright sword for its sharpness, nor the arrow for its swiftness, nor the warrior for his glory. I love only that which they defend."
4/30/2026 8:30:18 PM EDT
[#17]
Quote History
Originally Posted By King_Mud:


Shake awake is stupid anyway. It's one more thing to not work and makes zero sense when battery life is measured in months or years when constantly on.
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By King_Mud:
Originally Posted By dmk0210:
Originally Posted By Wandell:
YEP AND CHANGE YOUR BATTERY ONCE A YEAR, REGARDLESS OF HOW LONG THE MANUFACTURER CLAIMS IT WILL LAT


Also, keep in mind that with a CCW, your "shake away" optic is being shaken awake all day long. So it's pretty much just 'on' all day long. All it's doing for you is sleeping at night.

I don't see shake awake as a big deal for a CCW. Now for a home defense / night stand gun, yeah that's helpful.


Shake awake is stupid anyway. It's one more thing to not work and makes zero sense when battery life is measured in months or years when constantly on.


Cite examples of shake awake "not working".

The 2 pistol MRDS I have, which of course are shake awake, function just fine.
5/3/2026 12:39:18 AM EDT
[#18]
Quote History
Originally Posted By JoeDevola:


Cite examples of shake awake "not working".

The 2 pistol MRDS I have, which of course are shake awake, function just fine.
View Quote


Shit happens.


ONE EXAMPLE
5/3/2026 1:28:28 AM EDT
[#19]
Quote History
Originally Posted By TGWLDR:


Shit happens.


ONE EXAMPLE
View Quote

classic holosun moment...
"I do not love the bright sword for its sharpness, nor the arrow for its swiftness, nor the warrior for his glory. I love only that which they defend."
5/3/2026 9:16:14 PM EDT
[#20]
Y EDC IS A 43X WITH A HOLOSUN 507Kx2 with PSA MICRODAGGER MAGS.
5/3/2026 10:07:42 PM EDT
[#21]
Quote History
Originally Posted By Wandell:
Y EDC IS A 43X WITH A HOLOSUN 507Kx2 with PSA MICRODAGGER MAGS.
View Quote

5/8/2026 8:59:49 AM EDT
[Last Edit: dmk0210][Edited] [#22]
Quote History
Originally Posted By NvrBrdWes:

classic holosun moment...
View Quote
That poster should have RMA'd the gun to Holosun. They have a good replacement policy.

I have about 10 Holosun handgun optics. I've had only one exhibit a problem (circle reticle stopped working but a single dot still worked fine). That was a 1st gen 507c after seven years of use with that optic on multiple guns.  Holosun replaced it with a new model and no drama at all.


5/8/2026 9:14:49 AM EDT
[#23]
Quote History
Originally Posted By dmk0210:
That poster should have RMA'd the gun to Holosun. They have a good replacement policy.

I have about 10 Holosun handgun optics. I've had only one exhibit a problem (circle reticle stopped working but a single dot still worked fine). That was a 1st gen 507c after seven years of use with that optic on multiple guns.  Holosun replaced it with a new model and no drama at all.


View Quote

Thats good to know. I just has a 507k die on me. I switched to a Vortex Defender, but I'll ping holosun about their RMA program

"I do not love the bright sword for its sharpness, nor the arrow for its swiftness, nor the warrior for his glory. I love only that which they defend."
5/8/2026 9:18:32 AM EDT
[#24]
Quote History
Originally Posted By GaryT1776:
I use Trijicon RMRs, RCRs, and SROs.  I leave them on, second highest setting, 24/7.  I also change the batteries January 1st every year.
View Quote


This, Trijicon RDS's battery life is over a year, so an annual change suffices.
If you don't have a plan, you can't change it.
5/8/2026 9:35:27 AM EDT
[#25]
Quote History
Originally Posted By DVCER:
I think most are "shake awake" anymore.
Weekly dusting is a must.  
They are like a dust magnet.
View Quote
I am currently carrying my SCS which is on all the time, but solar charged.  I am probably on my third week and the dust issue may be overstated.  If dirt, mud, or snow is in your environment and you open carry, that is a bigger issue.

I had fully enclosed emitter type shake awake solar EPS green installed on my standard CCWs, but haven't made it to the range yet.




Preferred pronoun: MARINE
5/8/2026 10:14:57 AM EDT
[#26]
CC with a RDS isn't something I really think about anymore, it's just my normal carry method. I keep the dots on all the time on everything, rifle or pistol (excluding a couple of rifle safe queens). Holosun, Aimpoint, or Trijicon they all stay on. I've had exactly one battery ever fail within the 12months that I use the same battery. It was a Sig optic.

Change batteries every year and keep them on all the time.
5/8/2026 1:20:16 PM EDT
[Last Edit: dmk0210][Edited] [#27]
Quote History
Originally Posted By NvrBrdWes:Thats good to know. I just has a 507k die on me. I switched to a Vortex Defender, but I'll ping holosun about their RMA program
View Quote
Yeah, no reason not to. They have a lifetime warranty.
https://www.holosun.com/warranty

Here's the return form (They even send you a prepaid shipping label):
https://www.holosun.com/returns
5/9/2026 9:07:59 PM EDT
[#28]
Quote History
Originally Posted By GSPatton:
If you buy a good optic, the batteries last an outrageously long time.
View Quote


ALSO BUY GOOD BATTERIES, I ONLY USE ENERGIZERS IN MY OPTICS OR WMLs. NO KNOCKOFF AMAZON CHEAPIES.i use to argue with our depatments secretary about this because she would by the cheapest batteries amazon had like she was paying for them herself.
5/9/2026 9:11:49 PM EDT
[#29]


Also, keep in mind that with a CCW, your "shake away" optic is being shaken awake all day long. So it's pretty much just 'on' all day long. All it's doing for you is sleeping at night.
GREAT POINT. iM SURE ITS GETTING ACTIVATED EVENWHEN YOURE DRIVING OR SITTING AROUND ESPECIALLY IF YOUR ADHD.
5/9/2026 9:17:26 PM EDT
[#30]
Quote History
Originally Posted By Wandell:


ALSO BUY GOOD BATTERIES, I ONLY USE ENERGIZERS IN MY OPTICS OR WMLs. NO KNOCKOFF AMAZON CHEAPIES.i use to argue with our depatments secretary about this because she would by the cheapest batteries amazon had like she was paying for them herself.
View Quote


Aaron Cowan of Sage Dynamics actually recommends Duracells. He said they are the only batteries that don't fail on him due the heavy recoil of the slide slamming back and forth.

http://www.kentuckytacticalofficersassociation.org/uploads/4/0/6/1/40615731/sage_dynamics_pistol_red_dot_white_paper.pdf
5/9/2026 10:20:30 PM EDT
[Last Edit: JoeDevola][Edited] [#31]
Quote History
Originally Posted By TGWLDR:


Shit happens.


ONE EXAMPLE
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By TGWLDR:
Originally Posted By JoeDevola:


Cite examples of shake awake "not working".

The 2 pistol MRDS I have, which of course are shake awake, function just fine.


Shit happens.


ONE EXAMPLE


Absolutely valid.  And of course that's what great BUIS are for.

Hope dude contacted  Holosun about that,  that is a NO-GO.

Mine come on at slightest movement, so yeah, on all day when worn.

I shoot often with the dot off, using the BUIS, just to remain accustomed in case of any failure.
6/11/2026 11:58:28 PM EDT
[#32]
Quote History
Originally Posted By JoeDevola:


Cite examples of shake awake "not working".

The 2 pistol MRDS I have, which of course are shake awake, function just fine.
View Quote

The shake awake feature failed on one of my Romeo Xs. Sig replaced it.
That being said I do have enough confidence in them to CCW.
“I don’t want a valuable life lesson, I just want an ice cream.”
Space Corps Directive 196156: 'Any officer caught sniffing the saddle of the exercise bicycle in the women's gym will be discharged without trial.'
6/13/2026 8:27:01 AM EDT
[#33]
I think the market makes enough reliable enclosed emitter optics these days to end the "Dust my Optic" era.  Skin, hair and fabric dust  bunnies make there way in there.
6/14/2026 5:46:40 PM EDT
[Last Edit: Alaskanforfreedom][Edited] [#34]
Quote History
Originally Posted By dogtired:
I think the market makes enough reliable enclosed emitter optics these days to end the "Dust my Optic" era.  Skin, hair and fabric dust  bunnies make there way in there.
View Quote
Id give that statement a solid MEH ive never really had an issue if it ain't broke dont fix it. Sure its a concern but its slight just take a lens pen to the optic once a week. I am buying enclosed generally going forward though especially with the Vortex Defender line being available.
What it boils down to is that they fear an effective resistance to their power: So, Left in power=Guns bad, mmmmkay...?, Right in power=Guns good!-thskirk
6/17/2026 7:04:15 AM EDT
[#35]
I was not pounding the desk with that statement just mentioning to the new user that it probably is the better alternative.
6/18/2026 8:51:19 PM EDT
[#36]
PERSONALLY, I REMOVEMY EDC WHENEVER I RETURN HOME. IN A HOME EMERGENCY, I'M GRABBING ONE OF MY AR15S THAT ARE PLACED THROUGHOUT MY HOUSE. BUT, YOU MAKE A GOOD POINT. I DRIVE A JEEP SO I'M SURE MY 43X'S OPTIC IS ON THE ENTIRE TIME I;M DRIVING EVEN IF I;M SITTING PERFECTLY STILL BECAUSE THE JEEP DOESN'T EXACTLY RIDE LIKE A CADDY!
6/25/2026 8:38:59 AM EDT
[#37]
Quote History
Originally Posted By Wandell:
PERSONALLY, I REMOVEMY EDC WHENEVER I RETURN HOME. IN A HOME EMERGENCY, I'M GRABBING ONE OF MY AR15S THAT ARE PLACED THROUGHOUT MY HOUSE. BUT, YOU MAKE A GOOD POINT. I DRIVE A JEEP SO I'M SURE MY 43X'S OPTIC IS ON THE ENTIRE TIME I;M DRIVING EVEN IF I;M SITTING PERFECTLY STILL BECAUSE THE JEEP DOESN'T EXACTLY RIDE LIKE A CADDY!
View Quote
Dude
Drunk much??
6/28/2026 12:24:12 AM EDT
[#38]
Try an OSIGHT. They get the closed emitter, long battery life shake awake, auto brightness takes a beating….in addition, train & have a buis.

Closed emitter keeps the shit catcher area clear.

IP7 keeps dust and water from ruining your day because sometimes you five in with your gun still on…ask me how I know! FML!

BUIS….cause I can fuck things up.

Also, get a 22 for when you make a bad rds decision!
7/23/2026 12:15:30 AM EDT
[#39]
I will find out how much fun it is to carry with a RDS on a handgun as soon as USPS finds the holster they lost in Phoenix...


Plus...I need a lot more trigger time behind this one to get with the program - 50 years of "sight alignment" does NOT turn off overnight.
8/12/2026 4:57:04 AM EDT
[Last Edit: Justinandfreyja][Edited] [#40]
Quote History
Originally Posted By M15A2CLE:
Try an OSIGHT. They get the closed emitter, long battery life shake awake, auto brightness takes a beating….in addition, train & have a buis.

Closed emitter keeps the shit catcher area clear.

IP7 keeps dust and water from ruining your day because sometimes you five in with your gun still on…ask me how I know! FML!

BUIS….cause I can fuck things up.

Also, get a 22 for when you make a bad rds decision!
View Quote

Nevermind….I really love the COA, there is a small machine shop who is going to make a run of coa plates for the staccato HD. I am excited to try that setup as my current SRO annoys me at times.

Sign up to continue the discussion

Create a free account to share your thoughts, follow topics, and connect with the AR15.COM community.

Already a member? Sign In