the barrel is a steel curtain rod i found,it is 15mm Id. i found that it fits inside the original barrel nice and tight but still easy to remove, ive only had it shoot out a couple of times.
i usually use marble as ammo, and sumtimes i make darts outta nails and any other straight steel i can find, or i load it up with bout 20 bbs, plastic shotgun wads are very good for this.
i dont really have any specs on this, the curtain rod barrel is 102cm long, the chamber is 66cm long, overall lenght is 212cm. i have no idea wat the chamber diametr is or what the chamber volume is.
so here are sum pics feel free to ask any questions.











