Just bear in mind, the only downside to the DD Omega (unless they've changed it), is those 4 damned set-screws, they can take forever to get tightened down, aside from that though, it's been a good rail. Have one on my D.I. upper.
Proper tools brother. As opposed to using the supllied hex keys. Use a Craftsman Allen Head socket set. Only reason I recommend Craftsman.
Inexpensive
High quality
Lifetime Warranty
Manufactured in the United States of America
Also Snap-On makes long 5" long head extended reach allen heads.