also here is a list from the Brink wiki
# Adjusted Iron Sights
# Red Dot Sight
# Holographic Sights
# Silencer
# Four-Vent Muzzle Break
# Six-Vent Muzzle Break
# Front Grip
# Gun Sling
# High-Capacity Magazine
# Duct-Taped Magazine
# Submachinegun Drum Magazine
# Accurate X-Ray Scope
and the one the strikes me is the last one, accurate x-ray scope? how will it work? will it be balanced? so many questions so little answers, feel free to pipe in and be as mean as you want