"Regardless of its users' skills, the AK is renowned for its reliability and ruggedness. This is due to the fact that its tolerances are loose but its components are designed to function effectively when integrated. Every part was designed to last and to be "soldier-proof." The Russians consider its service life to be at least 25 years. An AK can be buried in mud, dragged through sand, and frozen solid yet will still load and fire. There are reports of rusted AKs being dug up in Vietnam after being buried with dead NVA for months and then fired without cleaning. One can literally drive tent stakes with the butt without damaging the weapon. Most magazines, regardless of the material they are made from, are robust enough to withstand rough handling. During the Vietnam War the author's Cambodian company discovered a Chinese-made Type 56 in the jungle covered with inches of matted leaves. It was completely rusted, except for the chrome-plated bore and chamber, and the wood furniture was in the first stages of rotting. After returning to the camp a round was found in the chamber, with eight in the magazine, which was rusted in place. It was removed after working in solvent. The weapon was still set on semi-automatic and the selector lever was rusted in place, but again was freed with a little solvent. After ejecting the loaded round, inspecting the bore, and chambering another round from the magazine, the weapon fired without any further cleaning. It had lain in the jungle exposed to the weather for a year, possibly much longer. The author does not think an M16 would have been operational after suffering the same extreme conditions."