This is a completed action toy designed for collectors.
From the new Transformers movie, Dark of the Moon, here's the villain himself, Megatron. Apparently, he's a truck now. The blaster he mounts on his arm when in robot form converts to a fusion cannon which he mounts on the deck when in Mack Truck mode.
Please note that the photos shown are of a prototype; the production version may vary. Also, figures such as this are mass produced and as a result some inconsistencies in finish and painting may occur; these are not considered manufacturer's defects. If you absolutely must have perfection, prepare to do some touch-up work on your own.