Optic Milling For Glock Pistols

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  • Optic Milling For Glock Pistols
  • Optic Milling For Glock Pistols
  • Optic Milling For Glock Pistols


Model: All Generation & Model Glock (43, 43X, 48 Is milled for 407K/507K, or RMRcc, only.)

Service: CNC Mill Slide For Optic (Optic MUST Be Sent With Slide - No Exceptions)

Finish: Cerakote Or Black Nitride

Other: We mill precision pockets for your optic! While many companies will mill an over sized "one size fits all" pocket, ours is precision as per your optic. The cycling of a pistol slide is not gentle. The last thing you want is all that force to simply be on the mounting screws due to an optic pocket milled too big! Screws have been known the shear and break over time due to improperly milled slides.

Configurations For Co Witness Sights Using Suppressor Height Sights:

Trijicon RMR & Holosun 507/508: Optic can be milled in front of rear dovetail or have rear dovetail milled out and mill new Glock dovetail in front of optic.

Deltapoint Pro: For lower 1/3 co witness, you MUST mill out the rear dovetail and mill new dovetail in front of optic. You MUST use plain black suppressor height sights.

If you are not worried about iron sights, any configuration is fine. 



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216 Reviews

  • 5
    Slide Milling

    Posted by MasterBlaster on Jan 5th 2023

    Ordered slide cut for my Holosun with Sniper Green Cerakote. Was expecting a gloss finish, but it is a flat finish. No problem as it looks great. Second surprise was that unlike my Glock 19 MOS which uses a transfer plate, the Primarymachine job has the sight sitting lower which is an added bonus! I can see my original iron sights, no need for new elevated sights. Also, seems to be far superior to the MOS as there isnt any slop, its a perfect fit. And lastly, the did the job over the holidays with no delay with a fast turn around So 4x Five Stars!

  • 5
    Glock 17/ Holosun 507C X2

    Posted by Frank Iacono on Dec 22nd 2022

    Followed the mailing instructions and shipped my G 17 slide. I chose to strip the slide myself. I was periodically notified by Primary Machine as to the progress of the order. The slide was returned in about 3 weeks. Upon opening I noticed the machining was flawless. The slide came with the reflex sight attached. I reassembled the pistol without any problems and went to the range to sight it in. Holosun sights are factory pre zeroed, so if all machining is square, theoretically, little sight adjustment is necessary. At 10 yards the first 5 shots were to poa. At 25 yards group was 2” high (works for me) and at 50 yards again shot to the point of aim. The only sight adjustment was minor, 1moa up and 1moa right. So the sight is accurately placed on the slide, the machining, slide finish restoration and attention to detail are outstanding,
    and pricing is reasonable. I was thinking to just get an aftermarket slide already milled for optics but for me, choosing Primary Machine worked out very well. I would unhesitatingly recommend their shop for those needing machine shop work on their pistols.

  • 5
    Excellent Work

    Posted by Levi on Dec 14th 2022

    Had Mike do an RMR/407/507 cut on my Glock 41 with the intention to run a 509T with adapter plate. Cut came out great, 509T works exactly as intended, overall very happy with the work, process, and return time. Thanks!

  • 5
    this is the second Ive had done and love them both.

    Posted by Gordon Lee on Nov 21st 2022

    I've sent two slides to Primary Machine be milled so far. Both were back faster than the lead time. Packing was top notch and came with no blemishes that I could find. ABSOLUTELY Beautiful work couldn't be more impressed. I'll have third slide headed their way real soon. Great work!!!

  • 5
    Excellent Craftsmanship and Customer Service

    Posted by Varinder Singh on Sep 1st 2022

    Slide came back after about two months with great fit and finish. Would recommend and use again for all my slide milling needs.

  • 5

    Posted by Edgar on Aug 23rd 2022

    Great job. Fast turnaround. Will use them again

  • 5
    Great work!

    Posted by Chad on Aug 23rd 2022

    Great fit and finish!

  • 5
    Optic Milling for Glock Pistols

    Posted by Andrew Fuller on Aug 22nd 2022

    I sent 3 Glock slides with Trijicon RMR Type IIs and Trijicon Bright and Tough Suppressor Night Sights. Slides were returned around 4 weeks later with RMRs and irons installed. RMR milling in front of rear sights are precise and exact. Black Cerakote finishes are without blemish. I've shot around 200 rounds through each pistol without issue. I have no hesitation whatsoever recommending or repeating business with Primary Machine.

  • 5

    Posted by Dan T on Aug 12th 2022

    If you are on the fence, go ahead and pull the trigger! You won't regret it! The work (optic milling and multicam cerakote slide finish) are absolutely flawless! Primary Machine received my slide on 7/12 and had it in the mail on 8/10. I just received it today and couldn't be happier! I only wish this site allowed you to upload pics. Truly great work!

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