Detachable 10 Round Magazine Conversion Kit for Remington 700 .223 or .204 Caliber Rifles. Made by Legacy Sports. Made for target shooters and varmint hunters, these POLYMER BODY magazines allow you to turn your four round box magazine into a 10 round capacity detachable. Fits Remington 700 in .223 and .204 Calibers. Kit includes Magazine and trigger guard.