TacFire UP01C2 Stripped Upper Receiver 5.56x45mm NATO Black Anodized for AR-15 Tacfire UP01-C2: Ready to be built into your next upper, this kit includes a black anodized 7075 T6 aluminum stripped upper receiver, forward assist assembly, dust cover assembly, and A2 style charging handle. The only thing you need to finish your upper is a BCG, barrel, gas block, gas tube, handguard, and muzzle device. (sold separately)