So you`re gonna wanna do this offline.
Select firestarter in the contract broker tab
Choose normal difficulty and disable bots
Buy it


Move on to next section (please)

So you`re gonna wanna get the asset that allows you to go on the two roofs
Go on the first roof
Go on the point of it; try to line yourself up with image. (to do so, use the background (top left) as a
reference
Put down ammo bags (optional)


(now please continue reading)

It is recommended you put up the sights (default is q (maybe idk))
Make the two longest bars line up with the fence, closest to the lighthouse thing
Line up the beam at the bottom of the sights to the top bar of the gate (to do so, you will need to
jump once you are positioned properly)
Ensure your gun is loaded
Ensure there are enemies there
Ensure said enemies arent civies
Then fire away!


(Now please read the last slab of text (and maybe comments if there are some))

Now, after a tiny bit of farming, you will have your beloved mod. You will need to slap that extended stock off your smoll bb.
Finally, you can observe what a beautiful baby you have made.