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1/27/2025 10:44:33 AM EDT
[#1]
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Quoted:
For the price of the Glock slide alone I can purchase a complete Ruger RXM.
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And not have the shitty MOS mount.  RXM is a much better out of the box pistol compared to the gen3
1/27/2025 11:15:22 AM EDT
[#2]
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Quoted:

That stuff absolutely happens. We've had numerous similar stories shared here about LE using the wrong numbers or having guns incorrectly entered because of things like slide serial numbers. I bet that even if it wasn't law a company like Glock would serialize them. Seems like a very Austrian thing to do.
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I've personally had a visit from the ATF after I legally bought some OEM Glock lowers that went through all the proper FFL etc.

The on-line seller was taking complete Glock pistols and selling the parts. The slides and/or barrels that originally came with my legal frames had the same serial # and must have been bought by some hoodlums on-line, attached them to their Poly80 lower and committed some crimes up North. The police, looking for a SN on the seized guns, only saw the SN on the barrel/slide and entered that into FCIC. When the ATF traced the crime guns, they came back registered to Mr. itchy-finger down in FL and wondered if I was some nefarious gun smuggler. I showed the agent my OEM frames and told him I never had the slides/barrels and never heard back again. The ATF guy was very nice and professional but it was not pleasant to explain why I bought new stripped OEM Glock frames (for $75). I could have said "fuck you, I want my lawyer" but I am still naively eager to help LE.
1/27/2025 11:17:28 AM EDT
[#3]
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Quoted:

They are slow but once they jump in the market a lot of people will choose them over aftermarket.
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Instead of that damn MOS, they should be cut to direct mount the RMR or other specific optics. That would be an easy buy instead of custom milling or using plates.
1/27/2025 11:18:44 AM EDT
[#4]
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Quoted:


Really anything but MOS. Everyone (except for Glock) makes a Gen 3 RMR cut slide.

If I was stuck in California, I'd rather have an RMR cut Dagger slide than deal with the MOS crime against humanity.

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Bingo!
2/21/2025 5:44:38 PM EDT
[#5]
Attached File



Added to OP.  

A guy on Reddit received his after ordering direct from Glock at $296.


https://www.reddit.com/r/CAguns/s/yr13NSFmvb
2/21/2025 6:12:01 PM EDT
[#6]
Quote History
Quoted:
For the price of the Glock slide alone I can purchase a complete Ruger RXM.
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Yeah but it’s an RXM.
2/21/2025 6:42:33 PM EDT
[#7]
Quote History
Quoted:


Yeah but it’s an RXM.
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Quoted:
Quoted:
For the price of the Glock slide alone I can purchase a complete Ruger RXM.


Yeah but it’s an RXM.



Unless you want 100% Glock parts, by the complete RXM and selling the frame is the stronger financial choice.  It can be argued that the multi optic mounting system of the RXM is superior to the plate based MOS system (unless you're using the SCS or one of the Gideon Optics that direct mount to the MOS cut).  

But that's an old argument.  I know what I would prefer and I'm glad that there are options for everyone.
2/21/2025 8:05:25 PM EDT
[#8]
I would agree that the RXM's optic mounting system is far better than MOS, overall.
2/28/2025 11:00:29 AM EDT
[#9]
The 17 and 19 slides are listed on the Glock web store.

I just ordered one and the confirmation email states 7-14 days to process and ship.
2/28/2025 3:45:42 PM EDT
[#10]
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It seems silly to mark these if they're manufactured for parts sales.  
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It sure does.

It's also caused great confusion for law enforcement agencies and civilians regarding the mixing and matching of parts and serial numbers being jumbled. Often times a trace will be run on a slide serial number, only for the owner of the frame to get a call that their gun has been recovered or used in a crime. Granted, its the fault of the person running the number, however, these bottom feeders buying Glocks just to part them out have to find a better way to turn a buck.
2/28/2025 6:06:09 PM EDT
[#11]
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Quoted:


these bottom feeders buying Glocks just to part them out have to find a better way to turn a buck.
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Don't paint with such a broad brush.  Lots of people upgrade their Glocks and don't need the slides anymore. A lot more people just upgrade the barrels.

There are a lot of serial numbers floating around. Blame the cops who are running the wrong damn thing (If that actually happens).

I could get the serial number of a stolen Glock has the license plate on my van. Doesn't turn my van into a stolen gun.
2/28/2025 6:38:02 PM EDT
[#12]
Need a G-21 slide, would be nice if a factory Glock.
2/28/2025 9:52:30 PM EDT
[#13]
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Quoted:
Why bother. MOS sucks.

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Disagree...

I have a G40, G41, G19, G34, G35, G20, and G21 all factory MOS plates and I've shot them a lot... hot loads in the 10mm, zero issues... I did use aftermarket screws though vs. Glock supplied screws.

How many MOS plated Glocks do you have and how much have you shot them? What's your opinion based on? Mine is based on actual ownership and use.
3/1/2025 12:41:02 PM EDT
[#14]
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Disagree...

I have a G40, G41, G19, G34, G35, G20, and G21 all factory MOS plates and I've shot them a lot... hot loads in the 10mm, zero issues... I did use aftermarket screws though vs. Glock supplied screws.

How many MOS plated Glocks do you have and how much have you shot them? What's your opinion based on? Mine is based on actual ownership and use.
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Quoted:
Why bother. MOS sucks.



Disagree...

I have a G40, G41, G19, G34, G35, G20, and G21 all factory MOS plates and I've shot them a lot... hot loads in the 10mm, zero issues... I did use aftermarket screws though vs. Glock supplied screws.

How many MOS plated Glocks do you have and how much have you shot them? What's your opinion based on? Mine is based on actual ownership and use.


Glock, a company that is extremely resistant to change, just released a pistol with a totally new mounting system... Probably because MOS and using plates has been working so great for everyone.
3/1/2025 9:59:25 PM EDT
[#15]
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Quoted:


Glock, a company that is extremely resistant to change, just released a pistol with a totally new mounting system... Probably because MOS and using plates has been working so great for everyone.
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A no plate system might very well be better,  that per se isn't being discussed... I'm just saying I have multiple MOS pistols, shoot them a bit, and have yet to have any issues. I've seen MOS pistols go through weekend classes with no issues.

Maybe I'm just ignorant and lucky. Maybe you can share some first hand/personal MOS plate disasters.
3/2/2025 12:10:24 AM EDT
[#16]
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Quoted:

Maybe you can share some first hand/personal MOS plate disasters.
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.....that don't involve the shitty OEM Glock plates.  Even my retarded yard cat knows those are awful.  


I hate plates because they raise the optic higher and adds another possible point of failure.  

Other playe systems with a deeper cut and where the plate just positions the optic look much better on paper.
3/2/2025 4:06:26 PM EDT
[#17]
Quote History
Quoted:


A no plate system might very well be better,  that per se isn't being discussed... I'm just saying I have multiple MOS pistols, shoot them a bit, and have yet to have any issues. I've seen MOS pistols go through weekend classes with no issues.

Maybe I'm just ignorant and lucky. Maybe you can share some first hand/personal MOS plate disasters.
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Quoted:
Quoted:


Glock, a company that is extremely resistant to change, just released a pistol with a totally new mounting system... Probably because MOS and using plates has been working so great for everyone.


A no plate system might very well be better,  that per se isn't being discussed... I'm just saying I have multiple MOS pistols, shoot them a bit, and have yet to have any issues. I've seen MOS pistols go through weekend classes with no issues.

Maybe I'm just ignorant and lucky. Maybe you can share some first hand/personal MOS plate disasters.


It isn't really about the MOS. Plate systems are inherently inferior. One doesn't need to try an MOS to see and know that.
3/2/2025 6:36:53 PM EDT
[#18]
Quote History
Quoted:

Instead of that damn MOS, they should be cut to direct mount the RMR or other specific optics. That would be an easy buy instead of custom milling or using plates.
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Quoted:
Quoted:

They are slow but once they jump in the market a lot of people will choose them over aftermarket.

Instead of that damn MOS, they should be cut to direct mount the RMR or other specific optics. That would be an easy buy instead of custom milling or using plates.

Glock has multiple versions of the MOS. They have guns with slides cut for different footprints directly, but they have different MOS numbers associated with them.

For example, MOS 7 is ACRO footprint.
3/2/2025 8:11:05 PM EDT
[#19]
Quote History
Quoted:

It isn't really about the MOS. Plate systems are inherently inferior. One doesn't need to try an MOS to see and know that.
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Nothing I posted denies inferiority... I simply disagree that they are the abomination many seem to post about, especially those who post it because they read about it or someone told them about it.
3/3/2025 3:01:44 PM EDT
[#20]
Quote History
Quoted:



.....that don't involve the shitty OEM Glock plates.  Even my retarded yard cat knows those are awful.  


I hate plates because they raise the optic higher and adds another possible point of failure.  

Other playe systems with a deeper cut and where the plate just positions the optic look much better on paper.
View Quote


While I don't have a Glock with MOS, I bought a Canik partly because the included adapter plates would give me options for an optic. Now that I've gotten a few and experimented with some different setups and sights, I think I'm just gonna get one of my older Glock slides milled instead of going the MOS/COA route. The Canik's plates seem to be decent quality, and I haven't had any issues, I don't like the added height. There are some aftermarket Glock-compatible slides that should work, but I already have a couple factory that I can use, so it seems more efficient & cost-effective to just have one of those milled instead of buying something else and leaving a Glock slide to sit in a box in the closet.

My purchasing options are largely guided by poverty, to be fair, though.


Also - isn't there a Holosun that will direct-mount to the MOS slide? I think I read that somewhere.
3/3/2025 3:54:10 PM EDT
[#21]
Quote History
Quoted:


Nothing I posted denies inferiority... I simply disagree that they are the abomination many seem to post about, especially those who post it because they read about it or someone told them about it.
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Quoted:
Quoted:

It isn't really about the MOS. Plate systems are inherently inferior. One doesn't need to try an MOS to see and know that.


Nothing I posted denies inferiority... I simply disagree that they are the abomination many seem to post about, especially those who post it because they read about it or someone told them about it.


Agreed.

Army Special Forces has been using the factory MOS for quite a while now.

Is it inferior to a milled slide? I’m sure.

But if it were as bad as some people claimed, SOCOM would’ve been sending non MOS slides off to be milled years ago.

Similarly, though I now have a FCD plate on my 19 MOS, I never had an issue with a properly installed factory plate in thousands of rounds.
3/3/2025 4:26:53 PM EDT
[#22]
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Quoted:

Also - isn't there a Holosun that will direct-mount to the MOS slide?
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Holosun SCS direct fits the standard Glock MOS cut (not G43X or G48 MOS).  Make sure it is SCS, not SCS carry (which is the K-Cut) or any of the other SCS variants (M&P, P320, VP9, etc).  


Gideon also makes the Granite in Carry and Comp styles that direct fits the MOS and they are also coming out with RMR versions (so make sure you are ordering the MOS version, if anyone gets one).


3/4/2025 2:41:18 PM EDT
[#23]
Quote History
Quoted:


Holosun SCS direct fits the standard Glock MOS cut (not G43X or G48 MOS).  Make sure it is SCS, not SCS carry (which is the K-Cut) or any of the other SCS variants (M&P, P320, VP9, etc).  


Gideon also makes the Granite in Carry and Comp styles that direct fits the MOS and they are also coming out with RMR versions (so make sure you are ordering the MOS version, if anyone gets one).


View Quote


I haven't got an MOS pistol. I'm considering upgrading one of my older Glocks by milling the slide. I'm a late adopter, and I'm just now getting into pistol optics. I have done some research to try to make sure I don't spend money unwisely (again) on something that's dumb or becomes obsolete 5 minutes after I get it.

Based on what I'm seeing now, the RMR cut seems to be common and versatile. There are many aftermarket options with that cut as well as stuff like Dagger slides that come already cut for it.

I have seen a lot of online bitching about the MOS cut, but I have no personal experience. I do tend to be wary if I see a lot of people complaining about something.
3/4/2025 7:54:51 PM EDT
[#24]
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Quoted:

I haven't got an MOS pistol.

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I was just answering the question that I quoted.
3/4/2025 8:07:58 PM EDT
[#25]
Quote History
Quoted:

Based on what I'm seeing now, the RMR cut seems to be common and versatile. There are many aftermarket options with that cut as well as stuff like Dagger slides that come already cut for it.

View Quote



The RMR cut is heavily used by Trijicon and Holosun.  RMR does give you access to most of what Trijicon offers and some of the most popular Holosun models (plus optics from many of the smaller companies who make multiple formats).


One reason the RMR cut is popular is because there are a lot of Trijicon nut-huggers who will not accept that anything else is worthy.  That is their opinion and they can spend their money however they want.

Holosun was smart to latch on to that and to churn out several models that fit in case people ever want to change to something else.  C series, 508T, 507COMP.

Holosun is also turning out some of their newest optics with K-Cut (sort of a modified RMSc cut).  Lots of new stuff with a true RMSc as well since there are so many compact and midsize guns that are factory cut for that.

Plus you still have the old Delta Point Pro cut, and some optics that are new and great coming out for that as well.  

3/6/2025 10:47:45 PM EDT
[#26]
I just ordered a 19 slide from Glock. Hopefully, they'll ship quicker than the last time I ordered something. It was considerably cheaper than anyone else that had one in stock so a wait won't kill me.
3/6/2025 10:59:31 PM EDT
[#27]
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I just ordered a 19 slide from Glock. Hopefully, they'll ship quicker than the last time I ordered something. It was considerably cheaper than anyone else that had one in stock so a wait won't kill me.
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@Bradd_D what was the price and how did you order it? I couldn’t find it on the Glock store.
3/6/2025 11:54:45 PM EDT
[#28]
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@Bradd_D what was the price and how did you order it? I couldn't find it on the Glock store.
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https://store.glock.us/g19-gen3-spare-slide-with-standard-mos-cut
3/7/2025 12:01:54 AM EDT
[#29]
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@Bradd_D what was the price and how did you order it? I couldn't find it on the Glock store.
https://store.glock.us/g19-gen3-spare-slide-with-standard-mos-cut


Thank you sir!
3/7/2025 12:45:49 AM EDT
[#30]
California will melt them down.
For a Few Dollars More.
You can get an entire used pistol.
3/7/2025 7:23:57 AM EDT
[#31]
Quote History
Quoted:
California will melt them down.
For a Few Dollars More.
You can get an entire used pistol.
View Quote



This is designed for California users.  They can't buy Gen5 unless second hand (most often from crooked cops reselling exempt guns).  

Hell, the only reason we can buy new Gen3 guns is California.
3/7/2025 8:47:40 AM EDT
[#32]
I could actually upgrade a Glock 19 to what I carried overseas now.  

Deltapoint Pro and a Glock 19gen3 MOS.
3/7/2025 10:05:23 AM EDT
[#33]
Quote History
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I could actually upgrade a Glock 19 to what I carried overseas now.  

Deltapoint Pro and a Glock 19gen3 MOS.
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But it wouldn't be clone perfect since these slides come with serrations, correct?  

I'm not like someone like me would worry about that. And I seem to be in the minority, but I actually like the factory serrations on the front on a G19. I don't like them as much on the 17 and definitely not on the 34. I guess I'm just weird
3/7/2025 1:20:46 PM EDT
[#34]
Attached File

Mine came in yesterday. I put an RMRcc with a forward controls plate I already had on it with Ameriglo sights.  The finish is more like a gen 5. Had a 30% off coupon for the Glock shop.
3/7/2025 2:57:10 PM EDT
[#35]
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@Bradd_D what was the price and how did you order it? I couldn't find it on the Glock store.
https://store.glock.us/g19-gen3-spare-slide-with-standard-mos-cut

That's actually not bad. There are many aftermarket options, but this is a potentially better option for someone who might want a OE part.

I have a Gen3 G23 that i would consider putting one of these on.

Quoted:

I seem to be in the minority, but I actually like the factory serrations on the front on a G19. I don't like them as much on the 17 and definitely not on the 34. I guess I'm just weird

Do you mean aesthetically?

For functional purposes, I don't know of any reason to oppose them. You might use them, but if you don't, they have no effect.

I didn't care about front serrations until I started putting optics on pistols - which go right on the spot I used to grab to rack the slide. Now, I kinda want them.
3/7/2025 8:08:14 PM EDT
[#36]
Damn this thread.  

I had no interest in these until the pics started showing up.  
Now I’m really tempted to get one and take the RMR off my carry gun which would justify buying a RMR HD.  

Someone tell me this is a great idea.
3/7/2025 8:34:22 PM EDT
[#37]
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Quoted:


Do you mean aesthetically?

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Yes, but I like the functionality as well (I've seen people who actually dislike the feeling of them, but opinions).
3/7/2025 8:35:36 PM EDT
[#38]
Quote History
Quoted:
Damn this thread.  

I had no interest in these until the pics started showing up.  
Now I’m really tempted to get one and take the RMR off my carry gun which would justify buying a RMR HD.  

Someone tell me this is a great idea.
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Just add a barrel and RSA and enjoy the fun!  
3/7/2025 9:36:10 PM EDT
[#39]
Quote History
Quoted:
Damn this thread.  

I had no interest in these until the pics started showing up.  
Now I’m really tempted to get one and take the RMR off my carry gun which would justify buying a RMR HD.  

Someone tell me this is a great idea.
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Go for it!!
3/7/2025 10:33:45 PM EDT
[#40]
Gen 5 G19 MOS... very pleasing to shoot.





3/13/2025 6:21:18 PM EDT
[#41]
I received my slide today. Dropped the barrel and RSA in and slapped it on. I also swapped out the firing pin safety plunger with spring and firing pin as the gun has a very nice trigger and I wanted to maintain that. I'm going to take it to the range tomorrow.

Attached File

3/14/2025 8:56:33 PM EDT
[#42]
Now when is Glock gonna sell me a Gen 5 MOS7 slide?
3/14/2025 9:49:39 PM EDT
[#43]
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Quoted:
Now when is Glock gonna sell me a Gen 5 MOS7 slide?
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When you buy the rest of the gun


The only reason Glock is making Gen 3 slides is because of California.
3/18/2025 8:32:56 AM EDT
[#44]
I'm always amused by the hate for the MOS system when someone like Ben Stoeger, who uses MOS glocks with Arise plates, shoots like 30-50k rounds before he sees hardware failures. And it's not always the plate-to-slide fasteners.

The factory glock plates suck but the MOS system does not.
3/18/2025 11:17:27 AM EDT
[#45]
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I'm always amused by the hate for the MOS system when someone like Ben Stoeger, who uses MOS glocks with Arise plates, shoots like 30-50k rounds before he sees hardware failures. And it's not always the plate-to-slide fasteners.

The factory glock plates suck but the MOS system does not.
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$109 can get you a rock solid optic cut too


I thought all the ARFCOM guys worshipped that duck plate guy?  I never heard of Arise until I started watching BS videos.
3/18/2025 12:03:21 PM EDT
[#46]
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$109 can get you a rock solid optic cut too


I thought all the ARFCOM guys worshipped that duck plate guy?  I never heard of Arise until I started watching BS videos.
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Ben uses Arise probably because his buddy Joel Park sets up his Glocks for him.

Personally,  I prefer direct mount. It does reduce failure points

But a good amount Glock models are only MOS now, which sucks.
3/18/2025 12:24:49 PM EDT
[#47]
Glock is Certainly in slow motion.
Competition with the G3 stuff rules!
3/18/2025 1:46:34 PM EDT
[#48]
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Quoted:
Personally,  I prefer direct mount. It does reduce failure points
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This is where I'm leaning, as I learn more and get used to using them.


I have some Gen3 clone stuff and a small collection of extra Glock stuff lying around - enough to have a couple more working pistols, but it's all mostly boxes o' parts as I keep working out how I want to configure things. I'm probably going to get an already-milled slide for the next one and then send out an OE Glock slide that I currently have to get it milled, so I can have a solid, trusted carry gun to put an optic on.
3/18/2025 3:39:21 PM EDT
[#49]
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Glock is Certainly in slow motion.
Competition with the G3 stuff rules!
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Except in Cali.
3/23/2025 9:38:57 AM EDT
[#50]
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Hopefully these will not have serial numbers
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I am gonna have 3 non-matching SNs on mine.

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