E-gunparts.com, Brownell's, Shotgun News, Gun List, Auction Arms, Guns America, gun shops, Midway USA to name a few.
You can.
The inkjet printhead is the part of the printer which the cartridge clips into. These rarely need replacing but if one does require them, they can be purchased from the manufacturer.
10 clips
triplek.com
Walmart
You can purchase driver window clips for a 1987 Chevy pickup at JC Whitney online. They offer free shipping with no minimum purchase.
Carefully take a needle & thread & sew the clips into the track of the hair; you can purchase the clips at your local beauty supply.
An assault clip would be a container of bullets that can be snapped into an assault rifle.
Gun shop, gun shows, e-gunparts.com
I beleive AirsoftMegastore recently got them in stock.
http://www.gunclips.net/nomo219mmfag.html
A pellet clip is the same as a bullet clip except for pellets. It fits in the breech of a pistol or rifle and holds the pellets that are waiting to be fired. Some clips are in the handle of the pistol.