No Time to Explain must be one of the best guns in Destiny.
If you miss the chance it'll roll back around again, but gosh - it's really worth doing sooner rather than later. Just watch Arekkz tearing shit up with this baby.
Dang. Dang. Boss, I'm just going AFK for an hour or two - no, no, don't check to see whether I'm logged into the PSN. I'm definitely working.
In case you missed the reference, No Time to Explain is a very similar model to The Stranger's Rifle, and the name is a nod to the mysterious Exo's most infamous line. The word "soon" is etched on it, apparently, which I hope means we'll learn more about the Stranger, uh, soon.