STANAG Magazines

A STANAG magazine or NATO magazine is a type of detachable firearm magazine proposed by NATO in October 1980. Shortly after NATO's acceptance of the 5.56×45mm NATO rifle cartridge, Draft Standardization Agreement (STANAG) 4179 was proposed in order to allow NATO members to easily share rifle ammunition and magazines down to the individual soldier level. The U.S. M16 rifle magazine was proposed for standardization. Many NATO members, but not all, subsequently developed or purchased rifles with the ability to accept this type of magazine. However the standard was never ratified and remains a "Draft STANAG".

The STANAG magazine concept is only an interface, dimensional and controls (magazine latch, bolt stop, etc.) requirement. Therefore, it not only allows one type of magazine to interface with various weapon systems, but also allows STANAG magazines to be made in various configurations and capacities.

STANAG Magazine Types
The following is a list of available STANAG magazines.

Box Magazine
Box magazines are the most common type of magazines, and are usually the standard issue for STANAG-compatible weapons. STANAG box magazines are available in the following capacities:
 * 5 rounds: $35, -1 to weapon Weight
 * 10 rounds: $35
 * 20 rounds: $35
 * 30 rounds: $35
 * 40 rounds: $35, +1 to weapon Weight
 * 50 rounds: $35, +1 to weapon Weight

Casket Magazine
Sometimes referred to as a "quad-column", casket magazines are high-capacity box magazines. They are wider than standard box magazines, but retain the same length. Casket magazines are available in the following capacities:
 * 60 rounds: $40, +2 to weapon Weight
 * 100 rounds: $45, +3 to weapon Weight

Drum Magazine
Drum magazines are high-capacity cylindrical magazines. Rather than storing rounds flat, as in a box magazine, drum magazines are stored in a spiral around the center of the magazine, facing the direction of the barrel. Drum magazines are available in the following capacities:
 * 90 rounds: $260, +3 to weapon Weight
 * 100 rounds: $265, +3 to weapon Weight
 * 150 rounds: $275, +5 to weapon Weight