“SCO O-RING PACK” has been added to your cart. View cart HomeClass 3 Firearms, NFA & Destructive DevicesClass 3 Parts & AccessoriesYANKEE HILL MACHINE COMPANY HUB DIRECT THREAD MT 1/2X28YANKEE HILL MACHINE COMPANY HUB DIRECT THREAD MT 1/2X28$70.75 YANKEE HILL MACHINE COMPANY HUB DIRECT THREAD MT 1/2X28 20 in stock YANKEE HILL MACHINE COMPANY HUB DIRECT THREAD MT 1/2X28 quantity Buy now Add to WishlistRemove from Wishlist Add to Wishlist SKU: LIP|YHM-2189-28 Category: Class 3 Parts & Accessories Product ID: 87907 Related products Add to WishlistRemove from Wishlist Add to Wishlist DEAD AIR WAVE SPRINGKEYMO $10.08 Buy now Add to WishlistRemove from Wishlist Add to Wishlist YHM 308 RFL THR PROT 5/8X24 .725 OD $16.25 Buy now Add to WishlistRemove from Wishlist Add to Wishlist SCO O-RING PACK $11.90 Buy now