Waldo Dynamics - VFC/GHK M4 Enhanced "Ion" Recoil Spring Thumb rest But it's still stiff enough

But it's still stiff enough for working excellent

Includes the new adjustable VELO competition trigger

Chunky Base Plate

The CNC Aluminium Thumb Safeties are machined with precise CNC tolerances from 7075 Aluminium

Waldo Dynamics - VFC/GHK M4 Enhanced "Ion" Recoil Spring Thumb rest But it's still stiff enoughYou asked, and we have provided; An icon in the recoil spring world for GBBRs Sometimes you just want your GBBR to snap that little bit more, so we decided to make you a spring just for that. Built at an estimated 140% strength, this gives quite a change in impulse when firing. If you were to pair this with a heavyweight buffer too you'd see a huge improvement in recoil. Finished in a distinctive purple coating, the finish not only reduces friction