I've had a Blaser R93 for a couple years, and I second everything that M16 said.
The rifle is awesome. I have a 7mm RM and a .308 barrel, both with their own Swarovski scopes. The whole deal travels nicely in its own case with all the necessary parts and some ammo to boot!
The bolt face and magazine insert need to be changed between my two calibers becasue one if a magnum and one standard, but you could buy several barrels for either of the two bolt faces if you were on a tighter budget or wanted barrel switching to be simpler.
In fact, what M16 said is very close to being true, but rather than not having an "action" the weapon actually has no reciever....
The action slides onto the top of an open base where the magazine insert goes. The barrel is then attached to the bedding in the stock just in front of the action. The chamber is not part of a reciever, it is actually part of the barrel, so short of destorying the barrel, there is no place for inconsistency from round to round, over the life of the rifle... no mnatter how many times you disassemble it, the relationship between the round, the chamber, the barrel, the muzzle and the scope (with the proper Blaser mounts) will never change!
Rich L. has a tactical version in .308 and he has always impressed everyone when he's taking it to the range or to a shcool.
Futo-
The tactical version is only available in .223 and .308 right now.
The one complaint I have heard about the Blaser is that the old synthetic stock sucked. Mine is wood, so I wouldn't know. Apparently, Blaser is now using a new kind of synthetic stock for 2000, so the number one most popular complain about Blaser (besides the price) has been fixed!