Use one of the following entries with the giveitem self code. Note: There appears to be only one type of weapon mod. For example, enter giveitem self 10 x_wgear_frictionlessmat as a code to spawn a level X Frictionless Materials weapon mod (+7% damage, -28% heat accumulation).

X_WGear_CombatScanner
X_WGear_CombatSensor
X_WGear_CombatVI
X_WGear_FrictionlessMat
X_WGear_HeatSink
X_WGear_HighCaliber
X_WGear_HyperRail
X_WGear_ImpSighting
X_WGear_KineticCoil
X_WGear_KineticStab
X_WGear_RailExt
X_WGear_RecoilDamp
X_WGear_ScramRail
X_WGear_TargettingVI