Some Examples
Firearm Parts and Accessories:
Prohibited
eBay prohibits members from listing firearms, including antique, collectible, and sport & hunting firearms as well as ammunition. This includes, but is not limited to:
Assault weapon-related parts or accessories. This prohibition applies to all parts and accessories related to any firearm defined as an "assault weapon" by federal or California law. For more details on assault weapons, please visit
http://ag.ca.gov/firearms/awlist.htm and
http://ag.ca.gov/firearms/awguide/awguide.php.Firearm receivers or frames, whether complete receivers and frames, components and parts of receivers and frames, or "cut" or "80%" receivers.
Parts or accessories prohibited for sale by federal or California law, including items related to short-barreled shotguns or short-barreled rifles, fully automatic weapons,
large-capacity magazines, multi-burst trigger activators and camouflaging firearm containers.
Any of the following firearms-related items: silencers, converters (items that can be used to give a firearm automatic capability), kits that can be used to create a firearm, potato guns and cannons, flares, flare launchers, flare guns, flare gun receivers, short barrels and any illegal firearm-related items.
Please note that any photos in a listing (including stock photos) must also abide by our Firearms, Weapons and Knives policy. If a prohibited item is included in a photograph for a non-prohibited item, the listing may be ended.
Permitted
All other legal gun parts and accessories, including, but not limited to, trigger guards, firing pins, barrels, stocks, butt plates, trigger assemblies, pistol grips, holsters and scopes. Listings for such items must clearly state the type of firearm for which the part or accessory is designed. If this information is not provided, the listing may be ended.
BB Guns, Replicas, Blank Guns and Imitation Guns
Prohibited
BB guns, air guns, black powder guns or muzzle-loader guns
Listings that use the term “BB gun” in the item title or description of any listing for an airsoft or replica gun.
Permitted
Paintball guns, "airsoft" guns*, pellet guns, replica, "look-alike," and imitation firearms under certain circumstances. These items:
Must have clear markings permanently affixed to them (commonly blaze orange markings on the barrel or a blaze orange plug inserted into the barrel)
Must not be readily convertible to shoot a lethal projectile
Must be located in the U.S. and the seller must be located in the U.S.
These rules apply to all items designed to look like firearms, including replicas/imitation guns of any age, as well as toy and cap guns.
Note: Most states require that purchasers of airsoft guns be 18 years of age or older.
Stun Guns
Prohibited
The possession and sale of stun guns is prohibited in Hawaii, Massachusetts, Michigan, New Jersey, New York, Rhode Island, Wisconsin, and the District of Columbia and may also be illegal in other locations within the United States. In addition to being prohibited under certain state laws, some municipalities also limit stun gun sales.
Stun guns that are designed to look like everyday items, such as cell phones or flashlights, or which are designed to be hidden or concealed, are not permitted on eBay.
Permitted
Sales of stun guns on eBay are only permitted to the extent permissible by law and may only be bought, sold, and shipped within the US. Sellers are responsible for reviewing the laws in their location and the location of the buyer and ensuring that sales are legal in both locations before listing and completing such transactions on eBay.
Hand Weapons
Prohibited
Nunchaku
Brass, plastic or metal knuckles
Leaded cane/staff/crutch/stick
Zip guns
Shurikens
Throwing stars
Knuckle knives
Billy clubs/batons
Sandclubs or sandbags
Slungshots (also known as saps or blackjacks)
Permitted
Faux or practice items, such as foam nunchaku or plastic throwing stars
Knives
Prohibited
Switchblade Knives: The interstate sale of switchblade knives is prohibited by federal law; therefore switchblade knives may not be listed on eBay. Federal law defines switchblade knives as “any knife having a blade which opens automatically (1) by and pressure applied to a button or other device in the handle of the knife, or (2) by operation of inertia, gravity, or both.” Butterfly knives are also prohibited.
Disguised Knives: Knives disguised to look like a harmless item are not permitted on eBay. These items include but are not limited to belt buckle knives, lipstick case knives, air gauge knives, and writing pen knives.
Push Knives: Push knives are not permitted on eBay. These items are often referred to as push daggers, punch daggers, punch knives, push dirks or T-handled knives.
Permitted
All other knives are generally permitted.
Pepper Spray and Mace
Pepper spray and mace may be listed on eBay to the extent permitted by applicable law. Sellers and buyers alike should be aware that several states and municipalities regulate the sale and possession of these items, and should make sure that they are in compliance with these laws when buying or selling pepper spray or mace on eBay.
Militaria, Ordnance and Grenades
Prohibited
Equipment and supplies issued to and formerly used by United States Armed Forces that have not been disposed of in accordance with Department of Defense demilitarization policies. Sales of such items may constitute violations of federal law.
Ordnance (military weaponry, ammunition, and related parts), even if the item is "unserviceable" or has been "demilitarized" or "demilled," as eBay cannot confirm that the item has effectively and permanently been altered for lawful and safe transport and sale.
Grenades, including metal military practice grenades, rifle grenades, dummy grenades, grenade launcher attachments, and mines.
Permitted
Replica ordnance, specifically items that were never actual military ordnance
Relics, curios, memorabilia, or display items permanently altered to prevent ready modification for use as a grenade.
Why does eBay have this policy?
eBay urges its sellers and buyers to comply with all governmental laws and regulations. Since the sale of weapons is highly regulated, or may cause harm to eBay or its members, sellers are restricted in their listing of them on eBay.
http://pages.ebay.com/help/policies/firearms-weapons-knives.html