thats what i figured but when i asked around they said they didnt have a sight pusher for an hk i got my g23 sites put on up there at cheaper than dirt in dfw but they wouldnt do the hk
Unless someone chimes in with a suggestion, I would google the local guys and ask each one if they can do it. I had mine done here locally, but I'm in DFW.
Here is the shop I used. www.caylor-custom.com These guys do a lot of custom work. I told him that my pistol sights were dead-on perfect, so he measured everything before the installation of my night sights.......and they are dead on too. No tool marks were left by the install....great job. I don't remember what he charged. I waited while he worked, they have shooting videos to keep you entertained. I will also note that I am 99% sure that Mike Caylor is a certified HK armorer.
I think the Bullet Trap in Plano can do it too. You might call them.....(972) 881-0372