Slimline MOS Retrofit - for G43X MOS/G48 MOS Only

This is a great retrofit. My 43X MOS is now fitted with a Holosun HE507K sans adapter plate. The Co-witness is fantastic because the optic is in alignment with the stock iron sights. Once you see it, it’s obvious.

I will note, this service doesn’t provide the necessary screws you’ll need to mount the Holosun optic, nor does Holosun. That’s not a dis because they don’t imply that they do, but the reality will hit you when your slide comes back perfectly machined, but every screw you have is too tall to mount your optic.

Bottom line - go to Calculated Kinetics.us. They sell the screw sizes you need in packages. Very simple. Hat Tip to Holosun who gave the link to this company.

Excellent service here. Big thanks to Lenny and to your boys in the machine shop. I would do this again in a blink.

Upon receipt, the GS shop had the job done and shipping back in 8 days! Was provided a filed down screw to work with my Holosun EPS Carry which was unexpected. My 43X still functions flawlessly and co-witnesses perfectly with my garbage factory Glock iron sights.

Best job, best price, and least amount of hassle. Can’t beat it.

Absolutely perfect job. Quick return. My Holosun sits nice and tight as it should. Thanks Glock Store.
Glock 43X
Holosun 507k X2

Exactly what I needed for my G48 thank you GlockStore for the retrofit 5 stario will come back for the laser stippling and laser engraving next for my G48

Super happy! Had them mill the nubs off my 48; the Holosun 507k x2 sits nicely! I’ll is the GS again for my other slides.

Shipped out my 43x MOS and within the 10 days it was back. Looks great and what an improvement without the mounting plate. You cannot go wrong with the GS!! My only regret wasn’t having them do the slide color black. Maybe next time. Keep up the great work!!