Volante Airsoft have the Merlin BBU spring available now:
Facebook page: https://www.facebook.com/Volanteairsoft
Website & shop: www.volanteairsoft.com
Merlin BBU Spring limited addition is now available.
Merlin Spring addition has:
10% higher fps
5 magazine routers
Beautiful IHR packaging
Please visit below link for more information & ordering.
http://www.volanteairsoft.com/?product=merlin-bbu-spring-addition
