Dark Storm Industries DS-15 Complete Upper 16" Lightning 5.56 Threaded Black 5.56 DSI-UC5-LGT-T5-BLK. 750 Micro Gas Block and Carbine Gas System. Specifications for Dark Storm Industries DS-15 16" Lightning 5.56 Upper Receiver: Manufacturer: Dark...
Dark Storm Industries DS-15 Complete Upper 16" Lightning 5.56 Threaded Black 5.56 DSI-UC5-LGT-T5-BLK. 750 Micro Gas Block and Carbine Gas System. Specifications for Dark Storm Industries DS-15 16" Lightning 5.56 Upper Receiver: Manufacturer: Dark...