Other designs—such as the Heckler and Koch HK21-based designs or MG34—require the Trade of modular components to allow belt or alternate feeding. Due to the deficiency of security provided by the belt, belt-fed infantry weapons commonly use a flexible or rigid container to retain the belt within the weapon. In https://griffinppmzn.tkzblog.com/30891373/top-ammunition-is-considered-hazmat-secrets