Color BlackBrand N/AModel N/AMaterial Aluminum alloyQuantity 1 SetGun Type Suitable for 20mm gunsRail Size 20mmMount Type Others，Ring Diameter NoPacking List 2 x Gun rail mounts1 x Hex wrench4 x Screw caps4 x Nuts<img src="http://112.74.112.28/down/products/277044/277044_000.jpg" noproxy>