MB02, MB03 replica tune up kit
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.
Number of reviews: 1 Average rating: 1.00
Somehow it didn't fit to my MB03D at all. With guide from the kit I could not load the gun, with stock guide and kit piston it armed but hardly moved forward.