Which is better? Plastic or Metal Hop-Up Units? Team Blacksheep writes about Hop-Up Units in their latest blogpost... "What is the “best” hop up unit on the market? Everybody asks and everybody who has an opinion says that METAL is the way to go and no other ways since plastic units will break without warning.

Let us take a look at the evolution of the Hop Up Unit just for the M4 series since that is the most common."

Read the full story here.