The Desert Tech Micron was designed to be a highly compact, highly versatile personal defense weapon. With an overall length of just 23.43”, the Micron can easily be concealed under a jacket or inside a backpack, and provides superior ballistics when compared to other .223 Wylde rifles of a similar length. This kit contains everything needed to convert a standard .223 Wylde MDRx rifle with a side ejection port into a MDRx Micron. Kit Includes:11.5 inch .223 Wylde Side Eject Barrel AssemblyMicron Handgrip Assembly5.56 Magwell Insert5.56 Magazine, 30rd.5.56 Side Eject Bolt5.56 Mag Conversion Bar5.56 Side Eject port cover5.56 Bolt cover panelInstruction ManualATF Registration KitNote: Early models of MDR/MDRx rifles with forward eject configurations are NOT compatible with this kit. Disclaimer: Installing this kit converts your MDR/MDRx rifle into a short barreled rifle. All NFA regulations apply Desert Tech MDRx Micron .223 Wylde 11.5" 30rd SE BLK Conversion Kit MDR-CK-B1130-SE-B