Disassemble and Reassemble Magpul PDR-C

First of all, i want to say sorry for the low lighting video, unfocused, and low quality,also perhaps the song is to low in volume.. This is the video of disassemble and reassemble of my Magpul PDR-C, including the disassemble and reassemble of the hop up unit.. it was easy to did that. this video is not including the mechbox/gearbox disassembling. maybe I will upload another video of it. I hop this video is useful.. thanks for watching..