Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
BCM
Member Login

Arrow Left Previous Page
Page / 35
Posted: 4/5/2019 10:37:48 PM EST
[Last Edit: 5/13/2020 2:47:31 PM EST by DOE]
Has anyone had a problem with the MOS platform?  Screws shearing off?  I spoke to a G-rep/tech, who will be nameless.  I ask, "How's the MOS system?"  He looks around (behind us as well) and then comments that they had a lot of issues with the aforementioned problem.  70% success rate in getting the broken screws out without damaging the rest of the slide.  The other, not so much.    The screws hold the mrds to the plate.  There's a gap fore and aft of the mrds.  As the slide recoils, all the stress is put on those two screws, since there is movement to the mrds.  The problem also occurs when you try to remove the mrds.    

Anyone had this issue?  Resolution?  Round count?
Link Posted: 4/5/2019 10:49:56 PM EST
They’re not the best. Should have a slide plate that isn’t cast.

The index pins on the adapter plates should carry some of the shear load, if not all.
Link Posted: 4/5/2019 10:59:43 PM EST
Screws shearing shouldn’t be a problem if one is using the right screws. If you’re using the screws that came with the MOS, you’re not using the right screws. The ones supplied have like a single thread engaged. I got mine from Fastenal, but if one is so inclined, one can pay an order of magnitude more for Gucci ‘correct’ ones.

Torque to spec, apply loctite/vibratite, and you’ll be fine. I agree that the MOS is not an ideal setup, particularly if one knows what red dot they want and don’t plan on switching. Still, most of the issues with the MOS are user error. Between my MOS 19 and 34 I’m up to around 3k rounds since Christmas RMR’d, and they work fine. 19.5 MOS on my hip as I type this.
Link Posted: 4/5/2019 11:00:08 PM EST
It's a Glock - they haven't even fixed the grip angle in 30 years. MOS nonsense is in the noise for me. Best approach is to have a regular gun's slide machined for the red dot by a competent gunsmith.
Link Posted: 4/6/2019 3:35:41 AM EST
Link Posted: 4/6/2019 8:16:02 AM EST
[Last Edit: 4/6/2019 8:16:26 AM EST by JohnMH92]
http://www.chpws.com/product/trijicon-rmr-holosun-glock-mos-adapter-plate-v3

I have one. Have 200 rds through it and putting 500 more through it later today. Have it on a g19 gen 5 MOS. Will update later. So far so good.

Will include pics later as well
Link Posted: 4/6/2019 8:23:02 AM EST
The MOS is a POS.

If you want an optic on a Glock, just have the slide milled.
Link Posted: 4/6/2019 8:58:47 AM EST
I’ve got 2 milled and an mos 34 that I have more rounds than the 2 milled combined.  At 50 rounds the mos shot loose so I used vibratite and torqued to 15 inch pounds and has been problem free since (lost count after 2000 rounds).  The milled 19x and 45 are definitely more solid as the rmr kind of snaps into the pocket like a lego and they look better.  I just wish someone would come out with an aftermarket mos plate that had a cleaner look.  That CHP plate is alloy so there’s no way I’m using that on a handgun slide.  I know people claim it to be problem free but I don’t trust it.  I’d gladly pay double for a steel version.
Link Posted: 4/6/2019 10:54:25 AM EST
I had problems because I used the wrong screws.
Link Posted: 4/6/2019 1:46:33 PM EST
Zero problems with mine.

That being said, I use proper screws, own quality de-greaser, and thread locker.

Usually problems traced to the "system" come from someone missing one or more of the above.

That being said, milled would be the best option.  I, however, can't use milled.  But I do trust the MOS system for a duty setup.
Link Posted: 4/6/2019 4:05:13 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Marksman14:

That being said, milled would be the best option.  I, however, can't use milled.  But I do trust the MOS system for a duty setup.
View Quote
My agency is the exact opposite. We have, in Policy, authorized the Trijicon RMR for use in duty pistols, however the slide SHALL be machined to accept that particular optic and only by ATEi. A few guys had slides done up by Jaegerwerks and the like and were able to be grandfathered in, but any new RDS setups must be done by ATEi. I have an M&P9 2.0 with an RMR done up by ATEi and I'm pretty pleased.
Link Posted: 4/6/2019 5:52:01 PM EST
have a gen 5 mos

4500ish rounds on it.

0 problems so far.
Link Posted: 4/6/2019 6:10:48 PM EST
[Last Edit: 4/6/2019 6:13:39 PM EST by Dana1972]
Are you using the correct screws, OP? Trijicon sells a kit for mounting the Rmr to the MOS pistols. Trijicon part number AC32064

I have over 2000 rounds through the G19 pictured and over 10,000 rounds through another with zero issues.

Attachment Attached File
Link Posted: 4/6/2019 6:15:13 PM EST
I also was on the fence about getting a slide milled or going with the MOS. I know that getting a slide milled is the better option but I didn’t want to be without my only pistol while waiting for the slide to be milled. I ended up choosing a Glock 19.5 MOS and have put about 500 rounds through it so far. I used blue Locktite and witness marked all of the screws and everything has been solid so far. I am also testing the Holosun 507c and am pleased with it as well. I think no matter what you choose, you should have backup iron sights.
Link Posted: 4/6/2019 6:34:47 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Marksman14:
Zero problems with mine.

That being said, I use proper screws, own quality de-greaser, and thread locker.

Usually problems traced to the "system" come from someone missing one or more of the above.

That being said, milled would be the best option.  I, however, can't use milled.  But I do trust the MOS system for a duty setup.
View Quote
What are the proper screws?
Link Posted: 4/6/2019 6:48:10 PM EST
I have a 34 MOS with about 3k rounds thru it with a Vortex Venom on it.  Never one problem.
Link Posted: 4/6/2019 7:57:10 PM EST
[Last Edit: 4/6/2019 7:57:51 PM EST by doty_soty]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Honda4828:

What are the proper screws?
View Quote
We did this a couple weeks ago:
http://jagerwerks.com/rmr-screws-t10-torx-wrench/

I got comparable screws from Fastenal, and paid about $3 for 10. Apparently either work, because after 3k rounds mine are still screwing along just fine.
Link Posted: 4/6/2019 8:24:28 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By doty_soty:
We did this a couple weeks ago:
http://jagerwerks.com/rmr-screws-t10-torx-wrench/

I got comparable screws from Fastenal, and paid about $3 for 10. Apparently either work, because after 3k rounds mine are still screwing along just fine.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By doty_soty:
Originally Posted By Honda4828:

What are the proper screws?
We did this a couple weeks ago:
http://jagerwerks.com/rmr-screws-t10-torx-wrench/

I got comparable screws from Fastenal, and paid about $3 for 10. Apparently either work, because after 3k rounds mine are still screwing along just fine.
Gotcha. I’ve been drug back into glocks due to some pics posted in the mk18 clone thread .  So I’m trying to play catch up. Looking at a gen 5 19 mos, Trijicon hrs, Mags, 13.5-1lh threaded barrel, taller sights, holster, and now screws lol. My wife is going to shoot me with it
Link Posted: 4/6/2019 8:57:25 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Honda4828:

What are the proper screws?
View Quote
The ones that come with the trijicon RMR mounting kit.

Another poster listed the part number above.  It also includes the sealing plate.  Works perfectly.

If someone had the specific dimensions for the screws, that would be awesome....
Link Posted: 4/6/2019 9:06:05 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Honda4828:
What are the proper screws?
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Honda4828:
Originally Posted By Marksman14:
Zero problems with mine.

That being said, I use proper screws, own quality de-greaser, and thread locker.

Usually problems traced to the "system" come from someone missing one or more of the above.

That being said, milled would be the best option.  I, however, can't use milled.  But I do trust the MOS system for a duty setup.
What are the proper screws?
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  @Marksman14
Thanks in advance for the info
Link Posted: 4/6/2019 9:15:39 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By 1Tribe:

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  @Marksman14
Thanks in advance for the info
View Quote
The ones that come with trijicon kit AC32064.
Link Posted: 4/6/2019 9:25:53 PM EST
Milled is great. Agency's AOS system is great, especially if you want to play around with other optics. C&H Precision MOS plates are a huge improvement over the Glock MOS plates. Proper screws, perfect length, proper install is the key. I use the C&H plates (Prefer V3), rack slide off of trees, tables or whatever. No issues. Plates don't solely depend on screws as the plate locks in the optic and V3 has 2 lugs.

Don't have a pic yet of V3 but here's a glimpse at the V2.

" />
Link Posted: 4/6/2019 9:59:14 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By DetroitSounds:
Milled is great. Agency's AOS system is great, especially if you want to play around with other optics. C&H Precision MOS plates are a huge improvement over the Glock MOS plates. Proper screws, perfect length, proper install is the key. I use the C&H plates (Prefer V3), rack slide off of trees, tables or whatever. No issues. Plates don't solely depend on screws as the plate locks in the optic and V3 has 2 lugs.

Don't have a pic yet of V3 but here's a glimpse at the V2.

https://i.imgur.com/xEtm5Ye.jpg" target="_blank">https://i.imgur.com/xEtm5Ye.jpg
View Quote
Did they finally make plates out of steel or still aluminum?
Link Posted: 4/6/2019 10:04:38 PM EST
It’s really not that hard people.

Attachment Attached File
Link Posted: 4/6/2019 10:39:31 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By DetroitSounds:
Milled is great. Agency's AOS system is great, especially if you want to play around with other optics. C&H Precision MOS plates are a huge improvement over the Glock MOS plates. Proper screws, perfect length, proper install is the key. I use the C&H plates (Prefer V3), rack slide off of trees, tables or whatever. No issues. Plates don't solely depend on screws as the plate locks in the optic and V3 has 2 lugs.

Don't have a pic yet of V3 but here's a glimpse at the V2.

https://i.imgur.com/xEtm5Ye.jpg" target="_blank">https://i.imgur.com/xEtm5Ye.jpg
View Quote
I have 700 rds through my V3. It’s awesome. I don’t rack my weapon on barrels or trees or anything of that sort. Used blue loctite. No issues so far.

The lugs are awesome and taking the bit of gap out helps keep the rmr locked in place. The kit comes with 2 proper screws to mount the plate and 2 proper screws to mount the rmr. No sealing plate needed.

Can’t say enough good things about it.
Link Posted: 4/6/2019 10:41:42 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Marksman14:

Did they finally make plates out of steel or still aluminum?
View Quote
Their website says they are still 6061
Link Posted: 4/7/2019 10:01:31 AM EST
I have a G40 MOS. My 190 gr cast handloads run 1350 FPS. I had problems until til buying the trijicon screws. No problem since.
Link Posted: 4/7/2019 10:40:19 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By JohnMH92:
http://www.chpws.com/product/trijicon-rmr-holosun-glock-mos-adapter-plate-v3

I have one. Have 200 rds through it and putting 500 more through it later today. Have it on a g19 gen 5 MOS. Will update later. So far so good.

Will include pics later as well
View Quote
I blame you for me spending $43.
Link Posted: 4/7/2019 12:10:44 PM EST
C&H V3 RMR plate as promised.

Total of about 700 rds through it. And yes I’m working on getting lower 1/3-1/4 sights. Right now those will do while I learn the RMR






Link Posted: 4/7/2019 1:54:45 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By azcheesehead:
The MOS is a POS.

If you want an optic on a Glock, just have the slide milled.
View Quote
No it’s not. People just don’t know how to listen or follow simple instructions.
Link Posted: 4/7/2019 4:02:58 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Dana1972:
No it’s not. People just don’t know how to listen or follow simple instructions.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Dana1972:
Originally Posted By azcheesehead:
The MOS is a POS.

If you want an optic on a Glock, just have the slide milled.
No it’s not. People just don’t know how to listen or follow simple instructions.
I completely agree.  Using the proper screws, thread locker and torque you will have zero problems.  Just because you buy Trijicon’s plate and screw kit don’t assume that the screws will be 100% the right length.  You still should verify that the screws don’t protrude out of the bottom at all.  I had one trijicon kit that the screws were a fraction of a millimeter too long and had to replace those.  Most of trijicon’s kits are fine though.
Link Posted: 4/7/2019 5:58:36 PM EST
I've had mine on for about 14 months and can guess between 2 or 3 thousand rounds without issue. I put it myself with the Trijicon mounting hardware (spring steel plate and screws).
Link Posted: 4/7/2019 9:57:59 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Dana1972:
Are you using the correct screws, OP? Trijicon sells a kit for mounting the Rmr to the MOS pistols. Trijicon part number AC32064

I have over 2000 rounds through the G19 pictured and over 10,000 rounds through another with zero issues.

https://www.AR15.Com/media/mediaFiles/312349/7CB3A34D-1535-4872-8ED9-E2D6B108533B_jpeg-903523.JPG
View Quote
Yes, I have the correct screws from Trijicon's RMR kit.  I was wondering if anyone from the community had this issue with the MOS platform.  
Link Posted: 4/7/2019 10:03:08 PM EST
@JohnMH92

Thanks for the pics.  Can you post additional of the rear.  Is the RMR sandwiched in there?  Drop in?
Link Posted: 4/7/2019 10:18:32 PM EST
[Last Edit: 4/7/2019 10:18:53 PM EST by JohnMH92]







@DOE

The plate was unable to move back and forth during installation when being screwed onto the slide.  It fits perfectly in there. The two lugs plus the size of the plate being exact to rmr spec makes it so it cannot move sideways or back and forth on the plate. The screws which have plenty of bite do nothing but hold it down to the plate.
Link Posted: 4/8/2019 2:01:27 AM EST
@JohnMH92

Thanks for taking the time to do that!  
Link Posted: 4/8/2019 10:36:14 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By DOE:

Yes, I have the correct screws from Trijicon's RMR kit.  I was wondering if anyone from the community had this issue with the MOS platform.  
View Quote
Then you shouldn’t have any issues.
Link Posted: 4/9/2019 5:39:42 AM EST
I have a leupold deltapoint on my G40, no issues yet.
Link Posted: 4/11/2019 8:42:51 PM EST
@DOE

My experience with the fit of the V3 plate mirrors JohnMH92's.  In fact, after attaching the plate it was such a PITA to get the RMR into the slide+plate that I thought C&H had cut it too small.  Turns out it was just REALLLY tight tolerances and the RMR had to be exactly 100% level sliding down into the plate; any forward or backward tilt at all and the high side of the RMR wouldn't clear into the plate.

Now that it's installed that baby isn't going anywhere unless it's being purposely taken off.

Since there's pics, I'll add mine - though it was taken before I installed my Dawson Precision sights.

-bob

Attachment Attached File
Link Posted: 4/12/2019 3:48:23 AM EST
@Bob_L

Thanks for the update.  I might request a T&E for review from CH.  Looks better than stock.  Why didn't Glock come up with that?  Ya Think?  Even FN has a better interface.  Only concern is aluminum, but if its 6000 or 7000 series grade, it should be good to go.
Link Posted: 4/13/2019 6:18:55 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By JohnMH92:
C&H V3 RMR plate as promised.

Total of about 700 rds through it. And yes I'm working on getting lower 1/3-1/4 sights. Right now those will do while I learn the RMR

https://i.imgur.com/X8g3pfG.jpg
https://i.imgur.com/kjo0M90.jpg
https://i.imgur.com/uVGKZQX.jpg
https://i.imgur.com/UbGvPGq.jpg
https://i.imgur.com/WbfuquV.jpg
https://i.imgur.com/vs0ieFp.jpg
View Quote
That's what the MOS should come from the factory with!
Link Posted: 4/13/2019 6:30:33 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Honda4828:

What are the proper screws?
View Quote
6-32 x .390

So 3/8 will be a little short (.375), 7/16 (.4375 - if you can find them) are a little long. Best bet would be to get some 1/2" ones and cut them back.

https://www.mcmaster.com/torx-machine-screws

I'll take  Torx over hex.
Link Posted: 4/13/2019 7:28:08 AM EST
While I'm posting in this thread...

Has anyone noticed the finish on the Gen 5s just isn't holding up as good as the previous generations?  Today my G19.5MOS is 3 weeks old. My G17.4 that I used for competition for years isn't worn this bad. ( stopped keeping track of rounds in 2014 @ 18k )

It's not that it really matters, as this gun will probably become my EDC pistol and will have wear in the next few years. It just surprised me when I came in from the range on Thursday how worn it already was.



Link Posted: 4/13/2019 8:09:27 AM EST
My 34 MOS will probably have a red dot on it at some point for competition. If I was going to carry a gun with a dot on it, it wouldn’t be an MOS.
Link Posted: 4/13/2019 8:50:49 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Henny:
6-32 x .390

So 3/8 will be a little short (.375), 7/16 (.4375 - if you can find them) are a little long. Best bet would be to get some 1/2" ones and cut them back.

https://www.mcmaster.com/torx-machine-screws

I'll take  Torx over hex.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Henny:
Originally Posted By Honda4828:

What are the proper screws?
6-32 x .390

So 3/8 will be a little short (.375), 7/16 (.4375 - if you can find them) are a little long. Best bet would be to get some 1/2" ones and cut them back.

https://www.mcmaster.com/torx-machine-screws

I'll take  Torx over hex.
I’m using 3/8. They work fine, but they could stand to be a little deeper. If you’re set up to start with longer and cut them back, I’d do so just so you have the best setup. If 3/8 is what you’ve got, well, mine haven’t unscrewed yet.
Link Posted: 4/13/2019 8:52:56 AM EST
[Last Edit: 4/13/2019 8:53:52 AM EST by doty_soty]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Henny:
While I'm posting in this thread...

Has anyone noticed the finish on the Gen 5s just isn't holding up as good as the previous generations?  Today my G19.5MOS is 3 weeks old. My G17.4 that I used for competition for years isn't worn this bad. ( stopped keeping track of rounds in 2014 @ 18k )

It's not that it really matters, as this gun will probably become my EDC pistol and will have wear in the next few years. It just surprised me when I came in from the range on Thursday how worn it already was.

http://i.imgur.com/zlidvqg.jpg

http://i.imgur.com/LJX229g.jpg
View Quote
I notice my 5’s finish seem to be a little weaker as well, it’s not a big deal or anything, but I notice it around holster rub areas. Moreso than my 4’s, and I noticed it on my 4’s more than on my frying pan 3’s I used to have. They say it’s weaker, but I think the older frying pan finish was the pinnacle of Glock finishes.
Link Posted: 4/13/2019 10:50:21 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By doty_soty:
I notice my 5's finish seem to be a little weaker as well, it's not a big deal or anything, but I notice it around holster rub areas. Moreso than my 4's, and I noticed it on my 4's more than on my frying pan 3's I used to have. They say it's weaker, but I think the older frying pan finish was the pinnacle of Glock finishes.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By doty_soty:
Originally Posted By Henny:
While I'm posting in this thread...

Has anyone noticed the finish on the Gen 5s just isn't holding up as good as the previous generations?  Today my G19.5MOS is 3 weeks old. My G17.4 that I used for competition for years isn't worn this bad. ( stopped keeping track of rounds in 2014 @ 18k )

It's not that it really matters, as this gun will probably become my EDC pistol and will have wear in the next few years. It just surprised me when I came in from the range on Thursday how worn it already was.

http://i.imgur.com/zlidvqg.jpg

http://i.imgur.com/LJX229g.jpg
I notice my 5's finish seem to be a little weaker as well, it's not a big deal or anything, but I notice it around holster rub areas. Moreso than my 4's, and I noticed it on my 4's more than on my frying pan 3's I used to have. They say it's weaker, but I think the older frying pan finish was the pinnacle of Glock finishes.
I agree,  my old 2 letter 3 digit serial number still looks good from 1991. Better than my pistol from the beginning of this month!
Link Posted: 4/16/2019 11:24:15 AM EST
[Last Edit: 4/16/2019 11:25:52 AM EST by Henny]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By doty_soty:
I'm using 3/8. They work fine, but they could stand to be a little deeper. If you're set up to start with longer and cut them back, I'd do so just so you have the best setup. If 3/8 is what you've got, well, mine haven't unscrewed yet.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By doty_soty:
Originally Posted By Henny:
Originally Posted By Honda4828:

What are the proper screws?
6-32 x .390

So 3/8 will be a little short (.375), 7/16 (.4375 - if you can find them) are a little long. Best bet would be to get some 1/2" ones and cut them back.

https://www.mcmaster.com/torx-machine-screws

I'll take  Torx over hex.
I'm using 3/8. They work fine, but they could stand to be a little deeper. If you're set up to start with longer and cut them back, I'd do so just so you have the best setup. If 3/8 is what you've got, well, mine haven't unscrewed yet.
I thought I'd post what the 3/8 Torx look like on the RMR plate with the Trijicon "sealing plate".

Attachment Attached File
Attachment Attached File
Attachment Attached File


As as you can see, they're pretty much a perfect fit.

To me, the big advantage of these are they are the same size Torx bit as the Glock plate and it's a Torx. Less chances to round off like a hex.

The disadvantage is is you have to paint the heads of the screws. No big deal, clean them with alcohol and hit them with flat black.

If you notice on the parts drawing at the below link, the screw head diameter is smaller than the other 6-32 screws.

https://www.mcmaster.com/90920a146

Note: I discovered the screw head size difference after my previous post. I thought I'd get some and see how they fit.  The screw head is just small enough to make these work.  
Link Posted: 4/16/2019 11:30:01 AM EST
Link Posted: 4/16/2019 12:58:33 PM EST
Installed some taller sights. More better

Link Posted: 4/16/2019 1:41:11 PM EST
Dawson?
Arrow Left Previous Page
Page / 35
Top Top