Models View all AR10 Bolt Lower Reciever 1 5 0 Para Ordinance P14/Kimber BP10 II/BUL M5 mag extensions (tested) 3 57 0 Electronic Enclosure L150mm x H55mm x W96mm (Easily Scalable, includes Blend files) 4 39 0 ETD 59 Vertical Bobbin 6 63 1 ETD 59 Horizontal Bobbin 7 81 1 ETD 49 Vertical Bobbin 4 62 1