This bolt spring is compatible with all Level 7 bolt types on all AGD markers, regardless of the marker's age or type. The spring is made from a special square wire, so it wont fold inside itself when collapsed. Replacing your spring will help you avoid bolt return issues and barrel leaks.

The Level 7 bolt spring is also the standard set-up with the Level 10 bolt if you're shooting normal-grade paint, such as 3 Star, Custom Blend, or Team Colors. Most players also report success with 4 Star grade paintballs. If you're looking for the most gas-efficient spring, the Level 7 bolt spring is your best bet.

You'll want to use the Level 7 bolt spring to replace your marker's bolt spring if it's been compressed in the marker for longer than a year, used for longer than a year, or the spring sags well below the front of the bolt.