I tried my best to recover the M4A1-S. By that I mean, same stats, poor accuracy when moving and without silencer, and unable to ADS.
Like the AWP custom weapon, I ported some skins with it. There is 6 skins at the moment, if you don't count the original paint.
Stats below:
Without silencer
With silencer
Pros + Decent damage. + Without a silencer, it can be concealable to use it in a crit build. + Not too low or too high ROF. + Decent accuracy and stability with the silencer on. + Shoot through walls. + High pickup rate.
Cons - Not concealable with the silencer. - Poor accuracy and stability without the silencer. - You cannot ADS. - Only cosmetic other modifications. - Bad accuracy while moving. - Small magazine