I see the benefits mostly in the event of a malfunction, I'm able to keep the muzzle down range while locking the bolt to the rear. By keeping the right hand on the the grip, the gun naturally points at the target and has less tendency to stray as it would it I had to start moving hands around to operate the bolt catch. I like it a lot, it's probably one accessory that has a good function for the cost.
By the way, you finally caused me to divulge that I purchased a "non" S&W AR. Yes, its a new Del-Ton 5.56. Sorry guys, I just got a whale of a deal. I did want to come clean abut it. I read all the reviews on it and all were five star. Had I more cash to work with I would have gotten a S&W 15, but it's just the way it turned out. I hope you all understand. I do have lots of other S&Ws though, even a 15-22.