MambaMag 10-round magazines were designed to fit into most factory stocks, without any modification, allowing users to increase their magazine capacity from the typical 3rd factory mag capacity to 10 rounds. This is great for anyone getting into precision rifle matches, varmint or predator hunting, or just wants to have more fun at the range. For the Howa 1500 10-round magazines, you will require a new bottom metal. MambaMag offers a replacement bottom metal that is needed to convert a factory stock to a detachable mag well to use these magazines. No gunsmithing is required to replace the bottom metal, it's just 2 bolts! DETAILS: These magazines are part aluminum and pa Mfg: Mdt