i know there are people here who don't know about him imps but want to so here's how i organize the main chopper models. start with the WW2 model, a big bent knife with a massive rat tail tang (sometimes referred to as an alligator tail). make it a little smaller and pointy and you've got the BAS. add a fuller near the spine for strength and you'e got the ang khola, the unbreakable knife. smooth the spine to a continuous arch and you've got the ganga ram, my favorite. a smoother arch that goes to the pommel and a full tang makes it the m43, adding white metal fittings. make it more slender and you've got the sirupati. add a deep fuller to the siru and you've got the gelbu, my fav of the slender models. a second fuller gives you either a chainpuri or a chitlangi if you also add the bell shaped pommel. there are tons more but these are the main ones. the angle of the bend and the shape of the belly vary.