Source: Arsenal, page 152
Available for all kinds of ranged and melee weapons that include a handle or grip. The weapon’s grip
is personalized for one specific person. When using the weapon, this person receives 1 point of recoil compensation in the case of a ranged weapon (for restrictions on recoil compensation, see
p. 148.), or +1 dice pool modifier on melee combat rolls in the case of a melee weapon.