Early steel AK-47 magazines are 9.75 in (248 mm) long, and the later ribbed steel AKM and newer plastic 7.62Ã39mm magazines are about 1 in (25 mm) shorter. The transition from steel to mainly plastic magazines yields a significant weight reduction and allows a soldier to carry more ammunition for the same weight.
The world loves the Border Collie for their lively, spirited temperament and their proficiency at dog sports like flyball and Frisbee games. But this breed is also one of the most intelligent, ranking number one on some scales of canine smarts.
Think your dog deserves to sit at the head of the class? If your pooch is one of these breeds, you're probably right! We surveyed 122 veterinary professionals to learn which dog breeds are the smartest, and the five listed below garnered the most votes. And anyone who has spent any time around these dogs is sure to agree. After all, we can't be the only ones who've been outsmarted by a Border Collie, can we?