Next Level Armament NLX 556 AR-15 Simplified Charging Handle Black. The Next Level Armament NLX556 AR-15 Simplified Ambi Charging Handle is a charging handle that is very similar to our original NLX556 Charging Handle with a new ear design. Still manufactured with 7075 aluminum we were able to make some small tweaks to the ears while keeping the aggressive feel. These minor changes made it possible to bring this charging handle to market at a lower cost. Specifications for Next Level Armament NLX 556 AR-15 Simplified Charging Handle: Manufacturer: Next Level Armament Color: Black Finish: Black Hard Coating Fabric/Material: 7075 Aluminum Caliber: 5.56x45mm NATO Gun Make: AR Platform Gun Model: AR-15 Hand: Ambidextrous Style: Ambi Length: 6.75 in Included Accessories: No Package Contents: Next Level Armament NLX 556 AR-15 Simplified Charging Handle What firearm models does the manufacturer say Next Level Armament NLX 556 AR-15 Simplified Charging Handle is compatible with? The manufacturer suggests that Next Level Armament NLX 556 AR-15 Simplified Charging Handle is compatible with AR-15Next Level Armament NLX737: NLX 556 AR-15 Simplified Charging Handle Black