This is an original factory replacement part from Marlin. Factory replacement parts are manufactured to the exact same specifications and tolerances and use the same manufacturing materials as the original parts. Disassembly and assembly may be required and some parts may require installation by a qualified gunsmith. The Marlin .22 magazine is manufactured for function and quality craftsmanship. If you are an avid hunter, you don't want to pass up on this magazine, especially given its limited quantity. The Marlin semi-automatic 922M rifle was discontinued in the late 1990s. However, it was well-built and proved accurate, which accounts for the current high demand for this product.