The BT Player Parts Kit for BT-4 Markers has all the high-stress parts you may need for a quick fix!

Includes:

  • 1 x drive spring,
  • 1 x drive spring pin
  • 2 x ball detents
  • 1 x shock absorber o-ring
  • 1 x valve / rear bolt o-ring
  • 1 x lower grip screw
  • 1 x lower grip nut
  • 2 x valve bolts
  • 1 x long receiver bolt
  • 2 x short receiver bolts
  • 2 x receiver bolt nuts
  • 1 x grip panel scrip
  • 1 x sear spring