CARBINE LENGTH GAS TUBE-AR15-UP-171

Pistol Length Gas Tube AR15-UP-170-AR15-UP-170

Rifle Length Gas Tube AR15-UP-173-811163030540

DMA Carbine Length Gas Tube XTS-GT-767820084442

Melonite Gas Tube, Pistol Length-210000354743

Magpul

Magpul MOE SL Carbine Stock Black AR15 MAG347BLK-873750002064