+1 for Mr. S here. I go through this with customers from time to time. In class we do teach the difference.
If you had a SKS with a removable mag and went to your local gun shop and asked for extra clips you would be pleased with the price and less then happy with what you saw.
If you had a SKS with a removable mag and went to your local gun shop and asked for extra clips you would be pleased with the price and less then happy with what you saw.