I love the way a H&K pistol looks with those sights that have the green hue to them. What brand are they? Are they factory sights or factory night sights? The closest I've seen are Meprolight. Just curious.
The new H&K sights are glow in the dark. They're not tritium or plain white, but will glow for a short period if you hit them with a flashlight. All in all they're kind of gimmicky and I highly recommend replacing them with some real night sights.
The glow in the dark sights are Superluminova, and as suggested by Scotch Man, I'd replace them if it were my gun. Meprolight is the OEM for pistols like the USP Tactical and MK 23.
