I fired my new GSG MP5 SD for the first time last weekend. Only one misfire due to bad ammo. I've read here people prefer the HK because the GSG has more plastic components but I had a ball with mine. I wish the stock was more securely attached(it tends to wiggle) but other than that I'm happy with it being the plinker that it is. If you know of a loading device for mags please share. I hate loading .22lr one by one.