a laser assisted RPG,direcly from the kangren labs,with a whole specs and ammo types ,for wich the butt muzzle is very important,since it can reduce the lfma and heat by 40%

don't forget to visit the album(new stuff)
http://s446.photobucket.com/albums/qq187/sadysadycool/skeches/?action=view¤t=smglaun.jpg