Upper Receiver, Side-Cocking, Flattop

- Extruded FA Side Cocking Upper Receiver

-Type 3 Hard coat Mil Spec Anodized

- 6061 T6 Aluminum

- M4 Feed Ramps

FA Side-cocking modified upper receivers & bolt carriers are designed to function as an assembly. FA does not warrant or guarantee function or safety of either part when used with NON-FA manufactured bolt carriers or upper receivers.