You utter penis, Sam!
I had to search the internet for like a year and ended up paying £230 for what you've got got for free! I even thought that was cheap! Anyway, I have ordered two Nineball purple hop rubbers after hearing how amazing they allegedly are. So one can go in my Glock, and one in my sniper. I just hope it lasts longer in my sniper than the 60 shots the stock one lasted...