M249/M60 Bowden Spring for Magazine

With an M249/M60 Bowden Spring you can replace the spring that is broken or has lost its strength from the M249/M60.
the problem often occurs due to forgetting to take BBs out of the magazine.
the other problem is that the spring ages through the skirm times and loses its strength slowly.
The spring is easy to replace, so you don't have to buy a new magazine right away.