Yet another mod done, I'll have a guide up soon.
Anyways, for those of you with a FAMAS F1 or are thinking of buying one, yet don't like the fact you can't put a sling- that's a complete load of shit.
I just put a sling on my FA-MAS F1, and still have full use of the bipod. I'll have pictures up soon- no internal or external mods are necessary, and you don't have to change your sling around any.
However, it doesn't use a gun sling- I used my guitar sling. The notch in the very front was perfect for the metal-bit that stuck out of the bipod.