Hello AirsoftSociety, I recently found a Umarex Mp7 aeg preowned for cheap. However, is this gun good enough to be a secondary and possibly a primary for friends who don't own a gun yet? Here is the link: HTML: http://www.airsplat.com/Items/ERM-UMX-HK-MP7.htm . Also, will these mags fit this gun? HTML: http://www.airsplat.com/Items/ER-MP7-WELL-MAG.htm . Thank you in advance, and I'm sorry if I posted this in the wrong section, but I believe this is the right section.