The proper way to open Comrade! Utilize Soviet sneaking abilities to take a Comrade's knife, bayonet or screwdriver. Then using hand (or mallet if you have Socialist tenancies) hit back of object while point is on 45 degree angle to metal, near rim on inside. Continue until is 1/4 way open or more. Then grip, and using Soviet strength, rip open. Or continue opening with previous method if your faith in our Great Motherland is not yet strong enough. Then, distribute ammunition to your 9 comrades, who do not have rifle like you!