Rocket High Rebound Spring Spring Rating:M190 It's metal construction makes this

It's metal construction makes this airsoft handgun reliable and dependable

The Heckler and Koch is an authentic HK replica with Gas Blowback power

The Elite Force H8R Gen 2 is everything you want in an airsoft revolver and nothing you don't

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this deluxe edition comes with medium and large interchangeable backstraps

Rocket High Rebound Spring Spring Rating:M190 It's metal construction makes thisMaterial: Japan piano wire Color: Black Descriptions: This type of spring is used for replacing the original one. Original springs are made of Chinese piano wire. Rocket black springs are made of Japan material, which can stand over 10,000 times pressing test.