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Features
- PDI 220 APS2 Spring
- For use with Maruzen Type 96 or APS 2
- 13mm outer diameter, 11mm inner diameter, 240mm long
- Should work with Chinese "clone" rifles (no guarantees for clones, but should work in theory)
- FPS around 420 or so, depending on your other upgrades
- Must use heavily upgraded parts besides this spring, including the V-Trigger (or Zero Trigger), metal piston and a 9mm spring guide
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