Item Description
HFC Gas Blow Back Series Upgraded Hammer Spring (#56) This upgraded hammer spring from HFC is designed to enhance the velocity of your Airsoft gas blowback pistol. Most hammer springs are very easy to remove and replace in quality Airsoft gas blowback guns. They are found inside the Main Spring Housing, located at the back of the grip in many different Airsoft gas pistols like those made, of course, by HFC, but also WE and KJW, for example.