This combo allows you to use a barrel of your choosing (16″+) to assemble a precision upper receiver group that takes full advantage of our M89 Drivelock lockup, and our Broadsword-89 billet upper receiver geometry, which creates one of the most rigid uppers available.
Pair this with our PRECISION SPR series of barrels, and you’ve got an upper ready to impress when you go to measure those groups.
For your convenience a dust cover and our forward assist are also included.