CYMA M16/M4 Metal Mid-Cap 190rnd Magazine – Black is an Airsoft Magazine for 6mm BB Guns which accept M4 / AR15 / M16 Style Magazines. The Magazine is constructed from Alloy with Polymer Internals, and feeds BBs using a Medium Capacity Spring Retention System, allowing the Magazine to dispense BBs without Rattle or need for Winding like High-Capacity Magazines. The Magazine is loaded with BBs from the top using an Airsoft Speed Loader, and can hold up to 190 BBs. This magazine is perfect for those Airsoft Skirmishers who are looking to bolster their Magazine Collection, or for those looking for Cheap Airsoft M4 Magazines which are of High Quality. The magazine is designed for CYMA / Tokyo Marui type magazine wells but may fit other manufacturers.