This 7.62x39mm, 30 round magazine fits all SKS rifles and carbines. The magazine body and follower are constructed with a proprietary DuPont Zytel based polymer to ensure durability and long service life. The springs are made from heat treated Chrome-silicon wire for increased reliability and smooth feeding. If you're looking for a durable and reliable magazine for your SKS rifle or carbine, then purchase this ProMag magazine!