A highest-quality Hop-Up bucking by Maple Leaf intended for installation in standard AEG replicas. A Hop-Up bucking with 70° hardness. The bucking features special, external outlets that positively affect the sealing of the Hop-Up system.
NB! Bucking is made for GBB barrel to use in AEG replicas.

KP-13 / KP-17 Nozzle
Hop-up rubber Prometheus 

