PRE ORDER Features Die-cast aluminum alloy construction Matte black anodizing 416 style raised flat top Picatinny rail Factory direct OEM replacement part Dust cover, forward assist, selector, mock bolt stop, and charging handle included For one-piece hop-up Blank lower receiver, perfect for custom engravings / laser etching Material: Aluminum. Compatibility: Fits TM, JG, Matrix and Other Compatible 416 AEGs Manufacture: Matrix / A amp;K (AIRSOFT ONLY)