Weapons can be made as an art, with original inlays or engraving. And sometimes the craftsmanship involved in their creation is considered an artform.
(Otherwise there may be less stories/myths of legendary swordsmiths or their creations like Excalibur.) Museums that deal with antiquities may even
have a section that just deals with arms and armoury. (If you're into this stuff and ever visit Chicago, you'd really like
this.)
Early artillery and siege weapons were also considered an art, sometime before the science was fully developed. I'm sure Leonardo DaVinci may have
some fairly well known examples.
Other weapons that never started with an artistic intent get embellished as an art. Maybe it's a hand-me-down hunting rifle. Somewhere along the
line, somebody decides to carve the stock, inlay it, or paint it, or perhaps do some engraving somewhere on the barrel. I'm sure even various modern
arms such as AK-47s see this type of treatment amonst the tribal groups that may be carrying them. We also do this too, but usually not with small
arms that have to conform to standards so they can be handed off or exchanged quickly. But looking at the big weapons systems? Bomber nose art,
roundels and aircraft livery, squadron insignia, ship's insignia, division logos, weapons system logos, and various mission badges... Are those
embellishments not artistic?
And sometimes there's the art of fictional weapons, or fictional warfare. Things like steampunk or sci-fi weapons are an art of themselves. And some
people make battles as art, in this day of computer games. You may see some oddball machinima involving warfare, or perhaps you might catch an epic
video of RTS battle that almost seems in sync with the music like Flail Supreme 2.
(YouTube fails to do it justice compared to the version that was on the SupCom forums, but if that footage is not artisticly directed and composed
I'm not sure what is.)
Also propaganda (or psi-ops) is very much an art form, if not a science. If you can create the imagery and symbolism to convince and lead the masses,
it's very much capable of being a weapon in its own right despite not being a physical and tangible thing. It's not like very well known history
doesn't have accounts of this. Old WWII era films and posters both Axis and Allied, are probably the best known examples. Perhaps best followed by
the early cold war rhetoric and chest thumping (some of the direction and editing of nuke footage can be considered quite artistic, with the purpose
to inspire fear or awe depending on the audience), with various imagry of the red-scare/iron curtain, Dr. Strangelove, and even made light of with
Rocky & Bullwinkle, etc.
The short answer? Yes.
but to make of
their bottoms the superbe arrow heads etc... 
