KWA M4 hop up reseting - FROM Airsoft Ohio Forums | Thumpy's 3D House of Airsoft™ @ Scoop.it | Scoop.it
From www.airsoftohio.com - January 9, 2012 11:09 AM

Good Advice for KWA owners:  "So my KWA M4's hop up has been reseting itself while in storage. I had it almost all the way up yesterday because the bb's never curve upwards no matter how high the hop up is. I stowed my gun away in its respective gun case and this ...