“YHM 22/556 RFL THR PROT 1/2X28 .730” 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 9 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 Out of stock Add to WishlistRemove from Wishlist Add to Wishlist DEAD AIR SNDMN/WLFMN FRNT CAP TOOL $28.77 Read more Add to WishlistRemove from Wishlist Add to Wishlist YHM .45 PIST TP .578X28 .650 OD BLK $16.25 Buy now Add to WishlistRemove from Wishlist Add to Wishlist YHM 1/2″-36 CRBNE ADPTR SDWNR M2 BLK $34.00 Buy now