Tear drop keymod rail adds a great custom style while savings a significant amount of weight.
Anderson Upper Receiver
High-quality, extruded upper receiver comes in A3 flattop configuration that offers plenty of flexibility in both open and optical sighting options. MIL-STD 1913 Picatinny rail has cross-slots that accept popular AR-15/M16 accessories and scope mounts. Shell deflector and forward assist are machined as a single unit.