Try this guy. He has weird hours since he is a Yonkers cop, but is great to deal with. He opens after work and is there until 11:00 usually.
K&R Gun Distributors
Yonkers, NY 10701
Phone: 914-968-3452
Fax: 914-968-1031
Davis Shooting in Sloatsburg is in Rockland, but transferred my Desert Eagle with no hassles.