Thing that bothers me the most is the very very poor finish on the engraved model. For the RA Tech kit, yes and no. If you have the time to attack the pieces with a dremel and a hacksaw then you dont need it. You do have to chop a bit off the piece picture above, took me about 10 mins with a sharp hacksaw. Next part is thinning out the barrel, which was the biggest pain in the *albatross*, took me about an hour with a dremel and dragging the cutting disk along the side of the barrel. For me the battery was 75 dollars shipped from RA while the kit would be only 125. For factor of not having to