The receiver is the frame of a firearm- in modern firearms, it is the part that the barrel connects to. Antique firearms, such as muzzle loading rifles, did not have a receiver- only the lock, stock, and barrel. (Yes, that is where the expression came from)
On a modern firearm, if it has a serial number, it is stamped on the receiver. By US law, a receiver IS a firearm- everything else is parts.
The receiver is the frame of the gun. When a gun is marked with a serial number, it is stamped on the receiver. It will be a different part depending on the type of gun.
Gun show, gun shop, flea market. Legally the receiver IS the gun, and sales must be conducted as if it were a complete firearm.
From a gun dealer. Legally the bare receiver IS a firearm, and you will need to go through the same processes as if you were buying an entire gun.
It is the frame of the gun. With present day guns, the part with the serial number on it.
Usually on the receiver.
It is usually somewhere on the receiver.
Except for the receiver
The steel part on the top of the gun where the gun can eject the bullet/reload.
Normally on the frame/barrel/receiver
Receiver
any part of a gun WITHOUT a receiver is not considereda gun
Depends on the parts, and from what country. The frame (receiver) of a gun is subject to import laws.