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.
1 These are very sweet companion dogs whose history of being inbred, as much as the royalty who kept them, helped create this deficit of brains. They are super cheery and affectionate, and we love them regardless.  Rottweiler: How the Rottie gets on some of the top 10 intelligent breeds lists is a mystery. This breed is known for having trouble concentrating and learning commands. Youâre also lucky if your Rottie remembers who you are. But these dogs are also very loyal and affectionate.