To proceed will VOID The Warrantee.....
And maybe breaking your gun or worse....
Hint:
DON'T FORCE ANYTHING
Put away that sledge hammer and monkey wrench
DON'T FORCE ANYTHING
The 2 pins that hold the ejector and firing pin in place

These need to be drifted out with a punch.
Remove only if you need to replace one of the springs.
To disassemble.....
Duh, first remove the slide.......

The feed ramp, polished with 1200 grit wet/dry paper, or a dremel w/ polishing tip.
I said "polish", not grind it off,
and don't for get to clean off the dust in the bbl when done....
Got it nice and shiny ? GREAT !

Left side of frame, showing the control detent plate

The (only) tools really needed,
tweezer, plastic allen tool (tweaking stick), and a small screw driver.
Next, the hammer spring removal

The lanyard block, installed.
Press the block up toward the top of the gun just a bit and push out the locking pin.
The pin should just come out without any fuss.

Let the lanyard block out easy, it's under tension.

Lanyard block removed

Exposing the hammer spring....
Remove it.
Next stop, the trigger/firing mechanism !
Commit !
! DISCLAIMER ! WARNING ! CAUTION !
Pictorial and text is intended for academic interest on an "as is basis"
NOT RESPONSIBLE FOR THE BREAKAGE OF YOUR USP
OR THE VOIDED OF YOUR WARRANTEE
OR (*#$&^!!!) MALFUNCTIONING OF YOUR WEAPON WHICH MAY
LEAD TO INJURIES OR TERMINATION OF LIFE, PERMANENT OR OTHERWISE
NO WARRANTEE/GUARANTEE/PROMISES IS EXPRESSED OR IMPLIED
(|< 1996/1997/1998 Dr Killjoy@
Henry's KodeWerks & SquishyWarez
a subsidiary of the Arachnid Corporation
a Member of The Banzai Institute