Mike,
The government subsidizes the production of military ammunition and then sells the ammunition at cost. Swiss military ammo must be registered if bought at a private store, but need not be registered if bought at a range. Registration consists of entering your name in a log at the time of sale. No serial numbers are present on the individual cartridges of ammunition. Technically, ammunition bought at the range must be used at the range, but according to David Kopel "the rule is barely known and almost never obeyed."[3] Ammunition for long gun hunting is not subsidized by the government and is not subject to any sales control. Non-military non-hunting ammunition more powerful than .22 LR (such as custom handgun ammunition) is registered at the time of sale
To buy a gun from an individual, no permit is needed, but the seller is expected to establish a reasonable certainty that the purchaser will fulfill the above-mentioned conditions (usually done through a Criminal Records Bureau check). The participants in such a transaction are required to prepare a written contract detailing the identities of both vendor and purchaser, the weapon's type, manufacturer, and serial number. The law requires the written contract to be kept for ten years by the buyer and seller. The seller is also required to see some official ID from the purchaser, for such sales are only allowed to Swiss nationals and foreigners with a valid residence permit, with the exception of those foreigners that come from certain countries (Croatia, Bosnia, Macedonia, Turkey, Sri Lanka, Albania, Algeria), to whom such sales are not allowed even if they do have a residence permit. Foreigners without a residence permit or from countries on the ban list must ask for a special permit.
After turning 18, any individual can buy singleshot or semiautomatic long arms (breech-loading or muzzle-loading) without a permit (so-called "free arms"). Likewise, members of a recognized rifle association do not need a buying permit for purchasing antique repeaters, and hunters do not need one for buying typical hunting rifles.
Basically, the sale of automatic firearms, selective fire weapons and certain accessoires such as sound suppressors ("silencers") is forbidden (as is the sale of certain disabled automatic firearms which have been identified as easily restored to fully automatic capability). The purchase of such items is however legal with a special permit issued by cantonal police. The issuance of such a permit requires additional requirements to be met, e.g. the possession of a specific gun locker.
Most types of ammunition are available for commercial sale, including full metal jacket bullet calibres for military-issue weapons; hollow point rounds are only permitted for hunters. Ammunition sales are registered only at the point of sale by recording the buyer's name in a bound book.