Question about hop up.
Hi guys i have a G&G GR-16 the Armament version. It has a one piece hop up, bit its plastic. I took it apart to sand the magwell of the metal body I bought. I noticed that the hop up unit has a place for a spring, but there was no spring on it. Can someone else who owns a G&G M4 confirm for me whether it come with a spring for the hop up unit? Thanks.
|