I bought a set of receivers last winter. then they sat. This winter i will finish the build. I have Mag tactical FDE recievers, Daniel Defense LPK, V7 weapon systems Tube, spring and standard buffer,end plate, and castle nut. and a Custom Ar spiral fluted socom barrel in .223 wylde. WIll be getting the fortis REV 12 rail, and Mission First Tactical Minimalist stock. I now have to decide on Gas block and BCG