Hello, I need help with my HK.  I have an HK USP .40sw handgun.  I want to put some Trijicon sites on it.  Problem is, I dont know how to get the sites off of the gun.  I'm quit sure its not any big deal, just dont want to take the chance on tearing something up.
                                 thanks

The best way is with a trijicon sight pusher, but those cost a bit.

If you don't have one, or can't borrow one, just tap them out with a brass punch and rubber mallet.  Make sure you tape up the slide VERY well, so you don't damage the finish with a errant blow.  Don't forget to mark the old location of the irons, so you can know where to line up the new ones.  

The rear Trijicons are usually a VERY tight fit, so I had to sand down the base of mine, in order to get them to fit.

If you aren't sure about yourself, let a gunsmith do it.  Better to pay $30 than to scratch up your slide or damage the trijicons.

Orion:

On the standard size USPs, the sites can be removed by pushing them out of the dovetail slots... You can do this the hard way, by hitting them out with a drift punch, or you can make a "site-vice", basically, a small metal (usually aluminum, so as not to mar the finish), u-shaped device, which fits over the slide, and has a pin with t-handle that moves in and out by threads to push the sites out.

Your best bet, I'm afraid, would be to go to your trusted gunsmith. Shouldn't take more than half an hour, and $30 max.

Happy (illuminated 3-dot) hunting,
havoc

thanks for the replies guys...Kinda sounds like maybe a gunsmith will be the proper choice in this matter.  LOL.......Do these sites "zero" themselves.  In other words, are they self aligning?