T4E oil is a non-petroleum based lubricant for use in the T4E markers to keep them functioning reliabily. T4E provides law enforcement and military Training Guns with authentic weight, feel and action to provide the most realistic training experience possible. Training with these authentic replicas provides better quality training and better reaction to real life scenarios. Our products carry supreme quality while remaining cost effective to all budgets. "Train More, Spend Less" Check T4E (Training for Engagement) for special pricing on their training guns, ammo, and accessories.