This is the Steyr Mannlicher SL 5 round factory rotary magazine in 5.6x50 Magnum for rifles with the new style dual side lock magazine.
The rotary magazine design is flush fit to the stock and is made of a tough polymer with a clear viewing plate at the rear.
Brand:Steyr
Weight:50 Grams
Calibre:.5.6x50 Magnum
Capacity:5
Model fit: SL
Material:Polymer
Colour:Black
Item Nr.: 102-3200050509