I have a flat top upper I want to buy a handle for and I was just curious if there was any difference in height or anything else that might preclude some from interchanging.  I'm thinking about buying the cheapest one I can find and I don't believe it will be made by the same manufacturer that made my upper.  Any input is appreciated.

They [b]should[/b] be pretty much all the same.  I'd recommend getting a [url=http://www.cdnninvestments.com/arflatcarhan.html]Bushmaster carry handle[/url] from [url=http://www.cdnninvestments.com]CDNN[/url] for $70.  I don't believe you'll find a better price anywhere, and you're definitely getting a "Quality Part".  [;)]

Thanks, but the site says out of stock.  I guess I can wait.  I'll give them a call to see when they will be back in stock.

I doubt if it is the cheapest, but the Rock River Arms carry handle w/rail is certainly different.