Well a few years ago Tyragon (or something like that name) produced a very high tech design band gun that only had a ring at the muzzle and no track of any description along the barrel. Forum member Magpie owned one and said is was vert accurate!
Re the dry barrel, yes indeed it is worth fitting! A dry barrel conversion will transform a standard gun into a much more efficient weapon...
Hey Fox,
If it is Trygons, you are thinking of, I think their claim to fame was a CNC milled enclosed track, water ballast and monoqoque shell of carbon fiber.
C4 on the other hand, while still all CF and supposedly very well balanced often (always?) seem to come without a rail and they do sometimes come with some funky stainless steel fittings at the nose (though I cant recall a ring-type).
Obviously, being a Dark Side Disciple myself, I agree with your take on the dry barrel!
@Andrew the fish, if you are interested, we are very alive over on the pneumatic section. It wouldn't take any of us long to tell you what options you'd have. But beware. You might stop looking at bandguns again.
I am of the firm belief that in the pound-for-pound game (or rather, cm for cm) you won't find anything more powerful and efficient than a vacuum-muzzled pneumatic. But then again, I have not shot that many bandguns.
Rollers, while they are more efficient than traditional bandguns, also have pretty substantial recoil, are sometimes nose heavy (more so if the roller muzzle is an aftermarket add-on) and a tad more bulky than a regular bandgun.
Only real competitor would be a demultiplied/compound rubber gun. No recoil and increasing force being put into the spear (as opposed to all in the beginning and nothing at the end) which means they supposedly have greater precision and range.
Check out Roisub guns and parts. Youtube it, there are some pretty impressive target shooting.
That said, pure power-effficency is def not the be-all and end-all and prolly most biggish fish in the past 5-10 years have been taken on railguns with 1-2 rubbers .