NOTES FROM LUKE: This precut Rival DvA from the K25 spring is the perfect upgrade mod for your blaster for greater speed and accuracy. This mod is not for young kids! You'll need fairly strong hands to prime this spring. This spring has been custom cut and tested to fit the Rival DvA blaster.
FEATURES: -Easy to Medium difficulty on installation -One end will be flat/squared, the other will be a raw cut. -Average 125 FPS
SPECS: -Cut-to-Length Compression Spring, -Spring-Tempered Steel -Made in the USA of USA steel -About 115-117mm Long (11 coils), hand cut, flat on one end.