My 450th video. My 19th in HD. WARNING! This video is extensive, and will NOT appeal to the newbies or the NON-techies out there! This video is for the airsoft techs who will UNDERSTAND MY work. This is what I externally did to my Magpul PDR. I didn't want to add a EOTech 552 replica or similar holosight. I was disappointed that the EOTech replica holosight gets drowned out in bright sunlight. So I went on-line, and oddly enough, found one on eBay. I also went for Magpul MBUS back up sight, since... it is a Magpul. As for magazines, I also went for Magpul PMAG & EMAG. When I seen the Echo 1 800 round high cap, I jumped at it. Part TWO will include my gearbox upgrade as well as inner barrel change. I started ordering the piston, pistonhead, cylinder, a sorbopad, and Titanium Nitride inner barrel. With my delight of the upgrade parts to my KWA SR10, I wanted to duplicate the upgrades into my Magpul PDR. I have to WAIT for the cylinderhead, tappet plate, and nozzle.