FN America SCAR 17S/20S Rifle Magazine 6.5 Creedmoor/308 Win/7.62x51mm NATO 20 Round Black 1 Pack Steel 98892-20RD. It is constructed of steel with a low-friction follower. Specifications for FN America SCAR 17S/20S 6.5 Creedmoor/.308 Win/7.62x51mm...