Glock MOS vs 3rd party slide milling

[American_Fusilier]

I have heard that the MOS will run optics higher than a milled slide. Can anyone confirm this?

If so, will suppressor height sights still be visible through a red dot on an MOS? Will it be like a lower 1/3rd co-witness? How usable will they be?

What do you guys prefer between the two?

 

[BreechFace]

Yes, Glock MOS runs adapter plates to adapt the slide mounting holes to the various brands of optics. This puts the optic up about a 1/8" higher than milling.

In my opinion milling the slide provides a greater shooter experience with the optic at the cost of pigeon holing one into a specific pattern of red dot optic base.

 

[Tinman357]

Yes. MOS will sit slightly higher. Suppressor sights will co witness.

 

[zaitcev]

I didn't realize how it all worked when I ordered a slide milled natively for RMR and a set of suppressor sights. The iron sights ended blocking too much of the optic. I ended having to set the optic on a raiser plate by Reptilia, which puts it at about the MOS height. I am not certain, however, that native milling is deep enough for stock sights to co-witness. Remember that Glock ships at least 4 heights of sights, distinguished by the little bar stamped into the side.

 

[tarosean]

3rd party.

Glock still hasn't resolved the issue of supplied screws being to long for trijicons.

 

[1KPerDay]

Or their plates being fragile

 

[Fishingted]

I have heard that the MOS will run optics higher than a milled slide. Can anyone confirm this?

If so, will suppressor height sights still be visible through a red dot on an MOS? Will it be like a lower 1/3rd co-witness? How usable will they be?

What do you guys prefer between the two?

Ok I Have The Glock 40 MOS. Personaly I Love the Gun. Mounted a Burris Fast Fire 3 On it. Did the mounting myself so No Problems with the screw Lengths. Though I have heard that getting different lengyh screws is no big Deal. Used blue Locktite when I did the Mounting and Have put a lot of rounds thru the gun with no sight Issues. I have also heard that suppresor sights will work fine to Co-Witness.Not a gun I am concerned with co-witness sights any way as I only use it for Fun Shooting and Possibly Hunting. Funny thing I can actualuy line up the front sight with the strait white line on the back of the fastfire site Very easily. And Yes I can see the front sight fine thru the fastfire. I tried it and naturally the Gun shot fairly high but center. But in a defense situation I think I would be fine. Just would aim Low. Like I said I don't use the gun for self defense. But people in Bear country may want that Co-witness.