It's an extra special edition of LEGO Gun of the Week! Get a close-up look at the creation of the Transformers MG-04 Megatron Gun by Flickr user Chris Roach. Below is his description of this build and a video of it in action! Bonus- you can buy instructions to make your very own LEGO Transformers creation! Thanks for sharing Chris!

"After recently upgrading my LEGO Optiimus Prime, it was only natural his nemesis got an upgrade too- here is my latest LEGO Transformers G1 Megatron (MG-04) Design - Fully transforms from pistol to evil Decepticon leader and back - watch the vid to see the new transformation and for more info on this creation: