Covers bolt from dirt and paint (easy cleaning)
A little of a pain to install. (not much)
I got this for christmas and was excited even before i got it on because it looked cool. When i took my gun apart, taking the stock cocking knob off was easy but wierd because some cockers allow you to place it right over. On the field the rocket cock preformed great and protected my rear bolt from hits and paint from the airball bunkers it got rubber on. Cleaning was easy and consisted of wiping it off with a rage or in an extreme case running water through it.
Buying this will reduce your gun maintanence time and you will enjoy the way it looks and protects your gun