Get a Router Jig to finish your 80% Lower Receiver. Router Jigs offer better accuracy at a quicker speed. 5D Tactical makes a great router jig at an affordable price. Take a look at out Jigs section to pick one up today.
5D Tactical .308/AR-10 Router Jig PRO – 80% Lower Receiver Jig
308/AR-10 Router Jig PRO by 5D Tactical
5D Tactical Original AR-15 / AR-9 80% Lower Router Jig
Original AR-15 / AR-9 80% Lower Router Jig by 5d Tactical