Glock 19

[Bowbenderman]

Suggestions for a company that mills the upper for a red dot sight?

 

[Clemson]

Nowadays it is more cost effective to buy a new slide. That way the sight cut is finished with the rest of the slide. The set-up, cuts, and holes in the slide milling process add up to big money at shop rates from $100-150 an hour.

Bill Jacobs

 

[trial&error]

You can buy a new slide already cut for around $150 depending on what you want.

 

[Gator89]

Buy a slide and upper parts kit, add a cool extended or threaded barrel and have two uppers ready to rock & roll.

Assembling a Glock is as fun as assembling an AR lower.

 

[frankwright]

I used Maple Leaf Firearms on my Sig 365 and they did a great job.
Battlewerks did a G45 Glock for me and also did a great job.
It is very close to the cost of a slide and all the parts to go into it plus sights, cheaper in some cases.

 

[cactusjack]

Suggestions for a company that mills the upper for a red dot sight?

These folks do great work. Might be a wait to get your work completed though.

https://jagerwerks.com/

 

[Railroader]

The custom milling ship has sailed, just order a slide, and you can have it both ways...

 

[benellisbe]

I replaced my G19 slide with a Zaffiri precision slide and threaded barrel. It was far cheaper and my RMR mounted right up.