This is a spare or replacement magazine for a Franklin Armory (or any other) AR-15 chambered in .17 Winchester Super Magnum. It is constructed from polymer material and holds 20 rounds. Franklin Armory manufactures quality firearms for military, law enforcement and sporting applications. They have facilities in California and Nevada, and are adept at creating products for restrictive jurisdictions.

Specifications and Features
Franklin Armory 5585
.17 Winchester Super Magnum
20 Rounds
Polymer
Black