Yup, the hammer is not under spring tension until cocked - it's been a standard 'feature' of FX guns for the past 10/12 years. It's a major facter in making the cocking action lighter or easier.
Thanks the free floating spring delrine guide, has a longer slide sound when not cock.
look through the hammer spring you will see it move---when the muzzel is pointing up you will see the guide then point the muzzel down you will see the end of the guide.