This rifle has a modular construction which allowed easy replacement of components and caliber changes.

Separate magnum receivers and barrels were made which were not interchangeable with non-magnum calibers.

[2] The standard 202 system uses the same receiver for mini and short action cartridges, but different types of bolts.

For example, the barrel tenon on the magnum receiver is larger, meaning that barrels can not be swapped between the standard and magnum receivers.

[citation needed] The barrel can be changed using a 5 mm hex key.