Our take: The NEW KWA K120 Polymer mid capacity AEG magazines are the perfect polymer magazines for your high end KWA airsoft AEG. Made from high density impact resistant polymer, the KWA K120 polymer mid capacity magazines are extremely durable and feed flawlessly even at high rates of fire (such as LiPO equipped KWA AEGs). A common problem with most other polymer mid capacity magazines on the market is their fitment and feeding issues in high end KWA AEGs. The NEW KWA K120 mid capacity magazines fit and feed flawlessly in all KWA M4/ M16 style AEGs, and features KWA"s iconic logo emblazoned at the top of the magazine. The ergonomic contours of the KWA K120 magazine paired with a non-slip textured surface make these magazines much easier to pull out of magazine pouches and chest rigs, increasing your reload efficiency. Specifications: Construction: High Density Impact Resistant Polymer Capacity: 120 Rounds Operation: Spring Guided (A speedloader is required for reloading the magazine) Compatibility: KWA, Echo 1, Tokyo Marui, G&G, G&P, VFC, JG, A&K, and other M4/ M16 style airsoft AEGs Package Includes: 1x KWA K120 Polymer 120rd Mid Capacity M4/ M16 Magazine Note: This magazine MAY be compatible with other airsoft AEGs that use STANAG type M4/ M16 magazines, however feeding and fitment CANNOT BE GUARANTEED.