This Tri-Rail Mount is made by precision CNC machines and has matt black hardcoat-anodized finishing. It fits MP5 SD6 (Marui Next Gen) AEG. The mount has 3 NATO Picatinny rails and the inside diameter is 40mm.All products are for airsoft only. They are not made for real steel firearms.Material:CNC 6063 AluminiumWeight:66 g※個体差により加工・調整が必要な場合があります。※画像とは色・質感が異なる場合があります。※画像は取付イメージです。次世代MP5SD6本体は別途ご用意ください。