Hello.
For Toredar (India), not difficult to find good samples on the net or books (Tirri, ....). You can follow the link of one of my pages
http://blade.japet.com/13-inde.htm
For Chinese or others from SE., it's not so easy.
See the image from G.C. STONE: first up is of the indo-asian typical shape (stock). In fact, indian & central asian influence on chinese firearm (Mantchoue period).
Stone's others samples are later (end of XVII°-XVIII°).
I just received matchlock chinese one i bought on E...-France for a couple of bucks...
Very interesting and design piece.
Comments are welcomed.
Louis-Pierre