Greetings, comrade! Relax, make yourself at home.
What is LCDMOD?
LCDMOD is a modification of 8-bit Famicom/NES games, such as Duck Hunt and Wild Gunman, allowing to play them with your original hardware on modern LCD/LED TVs!
Unfortunately, not all light guns are confirmed to work. Original NES Zapper commonly not work with LCD TV without a modification. The simplest modification that I can confirm is the LED replacement.
Fortunately, there are 3rd party light guns, that are confirmed to work well. One of them is Tomee Zapp Gun for NES.
To find out can you play or not, you need a modified game ROM, which you can load into your favourite flash cartridge or write down to a homebrew/custom cartridge.