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These Dart Zone Pro Mk-4 Springs are compatible springs to tune the performance of the DZP Mk-4. The Dart Zone Pro MK-4 may have some puzzling design decisions, but with its quick-swap spring system and gasketed barrel extension, It's one of the easiest to tune up and down.

FEATURES:
• Dart Zone Pro Mk-4 Spring
• Tune your blaster up or down to suit any event
• Easy, near-toolless install
• Reliable, consistent performance
• Compatible with the DZP Mk-4 and Nexus Pro X

INCLUDES:
• 1 DZP Mk-4 Upgrade Spring

PERFORMANCE:
Average FPS without the FPS+ Barrel*
• 130 FPS with the OOD 1.2 x 350mm Spring
• 193 FPS with the OOD 1.4 x 350mm Spring
• 222 FPS with the OOD 1.5 x 350mm Spring
• 238 FPS with the OOD 1.6 x 350mm Spring
• 264 FPS with the OOD 1.8 x 350mm Spring (Experimental, may take a set ov

DART ZONE PRO MK-4

Dart Zone Pro Mk-4 Springs