ics m4 low fps

[samsaras68]

As it says in the title my ics m4 has low fps, shooting around 200, however the range isn't that bad. I've only used it 3 games from brand new and its bog standard. I've tested a different upper gearbox with a more powerful spring only to find that increases the fps by around 20. Leading me to believe that I'm loosing air in the hop up. What can I do create a proper seal?

[madwelshman]

Re: ics m4 low fps

personally, I'd take it back if you have used it three times from new, let the warranty work for you!

no offence, its a newbie question, normally asked by someone with no knowledge or skill to rectify the issue either way, its best you take it back as is, rather than in bits in a plastic bag...

[Genesius]

Re: ics m4 low fps

^ I agree. If you can't for any reason then post back, or take it to a gun tech, but going back to the place your bought it would be my first port of call