Annoying squeak

[cohiba]

Ayone here know how to remedy that annoying squeak from the pump arm of a 13xx?

Man its annoying when outside at night trying to be stealth.

Thanks

[arkmaker †]

drop of oil on the hinge should do the trick 

[BDS]

Annoying squeak? Pump arm or Valve seat? 

[breakfastchef]

Some of Crosshairs videos have that squeak of the 1377. Are you using the stock valve and piston? If so, it may be the rubber piston cup running inside the pump tube making the noise. I have one gun that will sorta squeak for three or four pumps and stop. Might be a little too much oil in there or not enough. That is my guess.

[1377x]

i had an annoying squeek in my accustoms modified vavle
tested different valve in the same gun only the ac valve squeeked
took the various valves apartswapped internals back and forth
every valve that had the accustoms check valve had the squeek.stock no squeek modifed chech valve squeek
came across a stock valve with the same squeek same test applied with the same results.others have tried this and came to the same conclusion
but let me say every gun is also different.if you have some other gun parts try experiments you can get to the bottom of the noise that way