Yeah Im the one with the UMG and the huge L96.
The UMG is a great little gun, The range and accuracy is amazing for a short barrel.
The hop up is great to, The gun is made of plastic but not a rubbish plastic along with the
magazine. The gun has a working bolt catch as well.
You can fit a 9.6v stick battery inside as well, just by doing a simple mod.
If your going to get this gun I would get it from airsoft world as airsoft world
sells the UMG with a 530rd high cap magazine.
For more detail and a benchmark test take a look at this video:
http://m.youtube.com/#/watch?v=7pqPunEDMXw
If you have anymore questions feel free to ask
Dan