YHM Suppressor Gas Block, Black YHM-9389-SS Available to order on-line. Ships in 5-14 days $20.95 MSRP Price: $19.21 Description Details Reviews Shipping info Yankee Hill Machine Co Suppressor Gas Block, Black YHM-9389-SS UPC: 841812101239Manufacturer: Yankee Hill MachineModel: YHM-9389-SSCategory: PartsOtherStock: Ships in 5-14 business days.Unit/Measure: ea This item may be shipped directly to your home address, unless you live in a restricted state.