@JeremyECrawford How does the second feature of the Sentinel Feat work with weapons that have reach?

— Susan Stoddard (@valoriclight) October 25, 2016

The second benefit of the Sentinel feat works with your reach—whether it's 5 feet or 10 feet with a reach weapon or something else. #DnD https://t.co/VpFF5CA9ur

— Jeremy Crawford (@JeremyECrawford) October 25, 2016

@JeremyECrawford if using a weapon with reach is it only at the 10ft range or can it be at the 5ft range as well? Thanks for responding.

— Susan Stoddard (@valoriclight) October 26, 2016

If you want to make an opportunity attack with a particular weapon, the attack is triggered when a foe leaves the reach of that weapon. #DnD https://t.co/uO4bTeR3Qf

— Jeremy Crawford (@JeremyECrawford) October 26, 2016