Bottom Line Yes, I would recommend this to a friend

2) I finally got around to shooting my 20' heavy barrel ar with the levang comp on it. I initally thought it a gimmic and wouldn't work very well. All I can say is WOW!!! what a difference it makes. You still get most of the snap but not the concussion of the shot. It sounded more like shooting my 17hmr than the 223. I don't even think the levang on the gun it was as loud as the 17hmr. I even had my buddy shoot it and stood off to the side. The gun is still just as loud as ever, but its directed away from the shooter so as long as you're directly behind the gun it sure seems quieter. I will get another one for my 16" carbine and for my other 20 barrels as well. My buddies also thought it worked and wants one.

3) This is a good product that works well for LE and military tactical teams. When stacked up to make an entry, the Levang does a great job of reducing collateral damage to the hearing or eyes of other team members. In full auto, the muzzle flip of even 10 inch rifles is reduced significantly. Unlike other brakes/compensators, this one vents the nasty stuff forward towards the nasty bad guys.
Needs flats machined into it or simple wrench to match the ports for easier installation.
Would be nice in other bore diameters...especially .308