So I just put the MAMBA sling on my M4 and I must say it is a great sling. My rifle is always in the ready position whether it's infront of me or behind me. And it feels like the M4 isn't even there thanks to the bungee chord. The only problem I have with it is transitioning to the pistol you have to practice with it so that it won't snag on the gun or holster. But I highly recommend this sling to anyone.
