No rail guns or any whiz bang stuff. There are those that breathlessly post articles about those things, but only a single laser weapon has been deployed.
Navy has been beating it's drum for a long time (probably to keep the $$ flowing) about all their super-duper weapons, but most are not ready for prime time. Rail gun sure is not.
The third Zumwalt Class Destroyer (the LBJ) is scheduled to launch with a rail gun in 2018 - which reportedly fires a ten kilogram projectile at 5,400 mph. The first two Zumwalts will be able to retrofit railguns, or add lasers when they are ready.
Prototype rail gun, first displayed in D.C. this year:
