Well Spring Sniper Mb02 Mb03 Airsoft Spring Sniper Tune Up Kit - Sp150 Spring

WELL Spring Sniper MB02, MB03 Airsoft Spring Sniper Tune Up Kit - SP150 Spring WELL MB02, MB03 Airsoft Spring Sniper Tune Up Kit - SP150 Spring   The MB02 and MB03 replicas tune up kit includes a steel made spring, a piston and a ball-bearing metal spring guide. The whole set allows to upgrade the replica up to the muzzle velocity of  about 500FPS.