Nickona Posted June 20, 2011 Share Posted June 20, 2011 Hi, I've recently got a blackviper usp NBB pistol second hand. It fires fine but the gas doesn't appear to be staying in the magazine as if i leave it for a minute or two there will be no gas in the gun. Can anyone help? Thanks nick Link to comment Share on other sites More sharing options...
Cerbo Knight Posted June 21, 2011 Share Posted June 21, 2011 Hi, I've recently got a blackviper usp NBB pistol second hand. It fires fine but the gas doesn't appear to be staying in the magazine as if i leave it for a minute or two there will be no gas in the gun. Can anyone help? Thanks nick Try lubing the all the valves on the gun, but it does help if we know where it's leaking from Link to comment Share on other sites More sharing options...
Nickona Posted June 22, 2011 Author Share Posted June 22, 2011 I think it may be coming from the magazine Link to comment Share on other sites More sharing options...
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