Youtube: https://www.youtube.com/user/mpk1414 Instagram: https://instagram.com/mpk1414/ Facebook: https://www.facebook.com/mpk1414 FREE GIVEAWAY!: https://www.youtube.com/watch?v=a-Oqbmlc0jw TURN ANNOTATIONS ON AR15 Magazine List: PCA (Port City Armory) MSAR (Microtech Small Arms Research) CProducts Defense Stainless Steel Milspec Aluminum (as control, previously reviewed positively) Hexmag Thermold 30/45 Expandable Magazine Plinker Tactical I love doing this test because we learn a lot and we can show you the viewer what to (or not to) purchase as far as polymer magazines go. Most all the new magazines for your AR15 will be polymer due to the PMAG making a huge dent in the market (previously reviewed, not a fan). Most previously reviewed mags were found to be gimmicks/money makers. We went so far as contacting the companies who made the mags to see what they thought. The only one to reply was Hera Arms and, well, you can check that out yourself in our playlists section. Enjoy and please let us know if there are any mags you want to see reviewed! ... https://www.youtube.com/watch?v=HT0WTeIzOuA

https://www.patreon.com/mpk1414 Youtube: https://www.youtube.com/user/mpk1414 Instagram: https://instagram.com/mpk1414/ Facebook: https://www.facebook.com/mpk1414 TURN ANNOTATIONS ON AVE is an inspirational canadian bumblefuck. He inspires people to make things with their minds and hands. We appreciate his ship humor and what he has done for the science and technology communities. Check out his channel below! https://www.youtube.com/user/arduinoversusevil ... https://www.youtube.com/watch?v=FidFgxXmmf4