DDM4 with Quad rail. DD upper and lower. DD fixed front and rear sights. Chambered in 5.56. Excellent working condition, only a couple blemishes. Has less than 1000 rounds through it. Willing to sell with or without attachments. Price is WITHOUT attachments included: Magpul sling; Vortex Sparc AR red dot; Vortex VMX-3T magnifier. I have the original packaging for the optics as well. Price with the attachments is $1,700.