Ok I didnt read the tread so I dont know if someone else posted it. Basically first you get a gun and buy the aug3 scope. Stop at where it says Equip and storage. Press enter and quickly press the itech scope. You have about .00001 second to click it. Sometimes you gun switches back to the aug scope. Btw im not sure if its only me but the extended clip 2 doesnt work for me.