I wonder if Engage can laser etch the Mattel logo on one of my AR's?
http://www.dogfightink.com/80percentlowersmarkings.html
It's easy. Get an old battery charger. Attach red to the lower. Put clay around the stencil and fill with salt water. I use an old end mill as a sacrifical anode and attach that to the black terminal. Submerge endmill in the water and in 5 minutes it is etched.