N.A.T.O. The defensive military alliance formed in 1949 by ten european countries. WARSAW PACT A military alliance formed in 1955 by the Soviet Union Netherlands. Norway.
Tank Rings. Tank rings filled with gravel lift the tank above the surrounding grade. This keeps the tank out of standing water and increases the life of the tank bottom.
The gas rings on an AR15 rifle need replacing after every so often. Serviceable gas rings are important because they help establish a proper seal with the bolt and bolt carrier to effectively cycle the action during firing.f the weight of the carrier causes the bolt to collapse, then it's time to replace the rings. REPLACEMENT. Pry the first gas ring out of the bolt and slide it back over the bolt tail. Do this for the remaining two rings. Slide the first new ring onto the bolt tail and hook one end of the ring into the track..