The GFG Side Charger is a replacement charging handle for the AR-15 that wraps around the receiver allowing it to be manipulated from the side of the receiver rather than the rear of the receiver. Its main advantage over an extended latch charging handle, such as the BCM gunfighter, is that is allows manipulation of the bolt catch with the same hand as the charging handle.
This is not the first side charging handle I have seen, but it is the best looking. The retail price is $150.
Many thanks to Quan for the tip.