I recently needed to purchase some USP Tac bbl. O-ring seals, & the HK referred me to a ph. # for their parts supply. When I called that #, I got a teenaged-sounding secretary at the other end who told me that the staff who takes care of that stuff wasn't in, & she didn't understand anything so she couldn't process my order. She then took my number & said I'd get a return call on the following day. I never got that call, so I called back, only to repeat the same thing. Still no return call again, so in frustration I get on here & get an alternate source for O-rings, & place my order. As usual, I should have just started here to begin with.
I really like HK-enginered products. My USP & 94 run flawlessly. However, their customer service is lacking, IMO. I wish could say that I've had the same experiences that DoctorNo & SPECTRE have had, but that hasn't been the case. If it weren't for alternative suppliers, I doubt I'd have any of my ordered parts coming to me.