Airsoft Atlanta got in stock the new MAXX Hop-Up Chambers made for M4 AEGs... "New MAXX hop up Chambers for M4 AEGs now available. Honestly, these are some of the nicest made Chambers we've ever seen. The build quality is great! Designed for fast ROF and R or flat hop units. Great for AEG or HPA rigs $59.99. Plus we have all the other MAXX parts in stock too. Check it out on our new products page."