With regards to the GSG-15 I'm pretty happy with the purchase. I've put over 600 rounds through mine, 8 different types of ammo now and have only had troubles with Remington golden bullets not feeding properly. The construction feels solid, the folding stock has no wiggle. Seems accurate enough although I haven't really taken my time to see just how accurate it can truly be. Gives you a modern sporting gun feel with the low cost of shooting .22 ammo. What's not to like? I have made a couple videos on youtube about this gun don't know if I'm allowed to link them in my post, if I am I will edit this to include a link to the one of me shooting it.