5 Piece buffer tube assembly kit for mounting a stabilizing fin or blade. Can also work with a foam cover.

Includes:

  • 7.3″ pistol buffer extension tube
  • Recoil buffer
  • Buffer spring
  • End plate
  • Castle nut

Direct Link: https://3crtactical.com/product/ar-15-pistol-buffer-tube-assembly-kit-for-blade-fin/