A low price point shotgun is going to come with minimal price springs. The many things that make a high quality or specialty spring expensive include numerous steps.
First is the steel composition. Some alloys are better and more expensive than basic piano wire.
The wire comes in coils and best manufacturers straighten it then stress relieve it in an oven.
The surface may be polished or in large diameters peened.
The spring is coiled around a mandrel, then cut to a length.
It should be tempered in an oven again for surface hardness for wear, but not so hard it will crack rather than bend.
Some will then fully compress the spring to pre-set it before cutting to length. That theoretically reduces the life span, but it also prevents taking a set after installation. With a life of 50k plus compression cycles, this probably isn't a significant factor for magazine spring. A good magazine spring won't take a set after installation.
So, if you have a collapsed magazine spring, it was probably just a low quality spring to begin with.
First is the steel composition. Some alloys are better and more expensive than basic piano wire.
The wire comes in coils and best manufacturers straighten it then stress relieve it in an oven.
The surface may be polished or in large diameters peened.
The spring is coiled around a mandrel, then cut to a length.
It should be tempered in an oven again for surface hardness for wear, but not so hard it will crack rather than bend.
Some will then fully compress the spring to pre-set it before cutting to length. That theoretically reduces the life span, but it also prevents taking a set after installation. With a life of 50k plus compression cycles, this probably isn't a significant factor for magazine spring. A good magazine spring won't take a set after installation.
So, if you have a collapsed magazine spring, it was probably just a low quality spring to begin with.
