[bhale187]

Can anyone tell me how much a H&K USP 9/40 quik comp attacment with instructions in excellent condition woild be worth?

 

[MONEY]

I would say between $150 to $200. I use to have one on my USP .40 & it did not make much of a difference in accuracy plus it causes gunpowder stains between the slide & compesator which I could never get off my gun without takeing off the finish.