Rob Pincus takes you through the processes of successfully and efficiently reloading a bolt lock M4 in this video. Watch him demonstrate the improper ways of reloading and see the disadvantages of reloading a bolt lock M4 in this manner. Rob Pincus reviews the key components to a efficient reload from bolt lock with an AR type defensive rifle. Keeping the rifle in the ready position means that it will be easier to get the gun back into a shooting position, if necessary, when your reload is complete. Keeping the rifle down out of your line of sight also expands your ability to track a target, find new threats or locate cover to move to during your reload.