Ruger Gunsite Precision Polymer AI Magazine~ 223 10 RoundRuger's Gunsite Scout Magazines are constructed of a glass reinforced nylon polymer, making them highly durable and resistant to the elements, corrosion and most solvents. The magazines are easy to disassemble for cleaning, are function and drop tested at extreme temperatures, and come with a snap on dust cover for long term storage while fully loaded. Available in 3, 5, and 10 Round capacities. Note: This magazine may not function with aftermarket