Wilson Combat 1911 Spec Ops 9 9mm 16-Round Magazine with Pad

This is a factory STEEL 16-round magazine for the Wilson Combat Spec Ops 9 in 9mm.
These steel magazines are put through multiple tests to assure ever lasting service. Wilson Combat fortifies the steel on these magazines by immersing the steel to be blued in a solution of potassium nitrate, sodium hydroxide, and water heated to the boiling point. Ensuring that the magazine will last the shooter a very long time without corrosion.
The internals of this magazine include a fiber-filled nylon self-lubricating follower, and a heavy duty steel compression spring to assure minimal friction and sustainability when in the field or out in the range. 
Keeping a few extra factory magazines around is never a bad idea; extra magazines save loading time at the range and also serve as a backup for those days when you simply cannot remember where you put your primary magazine.