Rainier Raptor AR-15 charging handle on sale at Primary Arms for $69.99. Limit 2. Use coupon code RAPTOR. These are ambidextrous and very well made.
https://www.primaryarms.com/Rainier-Arms-Raptor-Ambidextrous-Charging-Handle-b-p/raptor556.htm
https://www.primaryarms.com/Rainier-Arms-Raptor-Ambidextrous-Charging-Handle-b-p/raptor556.htm