C-4, or Composition C-4, is one variety of plastic explosive. C-4 texture is pliable and resembles something like modelling clay, meaning it can be shaped in molded into different forms. C-4, being stable, can only be detonated by both extreme heat and a shock wave initiated from the C-4's detonator.

Usage

2011: Third Echelon Conspiracy

During the Third Echelon Conspiracy in 2011, Sam Fisher used C-4 during his escape from Price Airfield after he was briefly captured by Third Echelon and Black Arrow. He acquired C-4 from a Black Arrow ammunition stock and attached it to the Black Arrow helicopter stationed inside one of the hangers. Afterwards, he navigated through the base and placed C-4 on a satellite dish to disrupt Black Arrow's communications as he he made his escape from Price Airfield. C-4 was used during Sam Fisher's infiltration into the Third Echelon Headquarters, he had used the plastic explosives to destroy two power transformers in order to infiltrate the front office area. He had been able to use the explosion to disrupt the security measures and slip inside of the secured building.

Trivia

• In Splinter Cell: Conviction, C-4 was used twice by Fisher to achieve two different objectives: first one was to destroy a UH-60 Black Hawk to avoid being followed by Black Arrow, the second occasion was when Fisher had to infiltrate the Third Echelon HQ by destroying two power transformers.
• In the map Silo in Tom Clancy's Splinter Cell: Blacklist, Spies vs Mercs There is a train track with C4 loaded and a bomb timer which was disabled.