That reminds me of how Larry Hovis from Hogan's Heroes insisted on wearing his wedding ring on set, even though his character was single. The directors solved the problem by making Hovis wear gloves most of the time.
I think that Warren has the more likely explanation--it's an inverted pig-sticker style bayonet. At least the SKSes that I've seen have a wide blade style bayonet. It wouldn't fit in that tube.
The average earnings of a bachelor's degree or an associate's degree is an almost meaningless statement because degrees are not equally marketable. There's a world of difference between a bachelor's degree in electrical engineering and a bachelor's degree in the classics, or an associate of applied science degree in machining technology and an associate of arts degree.
That reminds me of how Larry Hovis from Hogan's Heroes insisted on wearing his wedding ring on set, even though his character was single. The directors solved the problem by making Hovis wear gloves most of the time.
Good luck in school, little one.