With the Milwaukee FNA-1 extended magazine, you immediately boost your productivity during demanding timber framing and construction projects. By doubling the magazine capacity of your Milwaukee M18 ffn or M18 ffns framing nailer, you load two full strips of nails at once. This drastically cuts down reloading downtime, saving valuable time when working on scaffolding or roof structures. You attach the magazine quickly and easily using a single fixing bolt. It reliably handles 30° to 34° collated nails ranging from 50 to 90 mm in length and 2.9 to 3.32 mm in diameter for continuous fastening.