Tubular Magazine Spring

Innovatac Shotgun Magazine Spring

Free Length: LIGHT 1200mm, MEDIUM 1200mm, FACTORY 1250mm

Light configuration for most modern semi-automatic competition shotguns with up to a 12-shell magazine tube.
Medium configuration for most pump-action shotguns with up to a 12-shell magazine tube, or enhanced feeding reliability for semi-automatics.
Factory rating for pump-action shotguns without feed modifications, suitable for very long tubes, and increased reliability across all platforms in dirty conditions or other feeding issues.
Constructed from high-quality steel spring wire with color marking (note: the spring steel is not colored, as shown in the picture).

Instructions:

Remove any color or power markers, as well as packaging materials from the spring.
Attach the spring to the magazine tube and compress it fully 4-5 times (fill the magazine completely with shells).
The spring will settle and shorten by approximately 40-90mm.
Trim the spring to your preferred length after it has taken a set.
It is advisable to leave the spring longer than the recommended minimum to enhance reliability.

Tube Length = the total length of the magazine tube from the receiver shell latch to the end of the magazine extension tube.

Example Recommendations for Typical Magazine Tubes:
Recommended minimum for Light in a 12-shell tube: tube length + 350mm (no cutting necessary).
Recommended minimum for Light in a 10-shell tube: tube length + 300mm.
Recommended minimum for Medium in a 12-shell tube: tube length + 250mm.
Recommended minimum for Medium in a 10-shell tube: tube length + 200mm.
Recommended minimum for Factory in a 14-shell tube: tube length + 250mm.
Recommended minimum for Factory in a 12-shell tube: tube length + 200mm.

Ensure that your magazine tube and follower are clean and smooth.
Always test the functionality of your setup during training.