FN America 303 Rifle Magazine Assembly 30 Round. These magazines will each hold 15 rounds of less lethal ammunition to allow for easy interchangeability in the field. Specifications for FN America 303 30 Round Rifle Magazine Assembly: Manufacturer: FN America Color: Black Magazine Capacity: 30 Round Gun Make: FN Herstal Package Contents: FN America 303 30 Round Magazine Assembly The FN America Fn303 Magazine Assembly is a quality addition to the FN America lineup. For more great deals on Rifle Magazines by FN America please browse our FNH USA Magazines page. FN America 48188: 303 Rifle Magazine Assembly 30 Round