$715.00
"The Model X-5.7P is CNC machined from solid Aluminum and Chambered for the 5.7x28mm. The unique design provides a picatinny rail for various optic attachments. The X-5.7P has tactical AR styling, 8-1/2" barrel and tapped holes in the hand guard for mounting accessory rails."-ExcelArms.com
I can't find any reviews on this weapon yet, but please check back.
I discovered Excel Arms company quite by accident, after being impressed by one of their .22 magnum rifles for sale at a Florida gun shop. Check out their website here.