trodaThe Colt IAR6933CK Complete Upper Receiver Assembly is used on the short barrel IAR variant, built at the request of FBI HRT. This monolithic upper receiver features an uninterrupted full-length top rail, allowing for a free-floated barrel with a gas-block mounted folding front sight post, a heat sink, and a backup rear sight. The barrel is Colt's heavy 16" chrome lined IAR barrel with an A2 flash hider up front. Includes Colt full auto bolt carrier group assembly & charging handle. Shipping $25
