Lol, use it whatever way you want. Its just an airsoft gun.
Just make sure to disable your blowback.
I own the L85, absolutely love it, but it often needs a bit of tech work out of the box. The guns biggest issue is that it usually always has a fucked up semi auto function due to the design of the gearbox. I have yet to do the fix, but there is plenty of vids and tutorials online to help you along.
Disabling the blowback is huge, too. I found that my battery drained way too fast with it engaged.
