Home / Parts / Two. Swivel stud, adapter, pushbutton base. “Parker Hale, 308 bull barrel” has been added to your cart. View cart Two. Swivel stud, adapter, pushbutton base.$25.00 4 in stock Two. Swivel stud, adapter, pushbutton base. quantity Add to cart SKU: 157bu Category: Parts Product ID: 11624 Description Description Bye Grove, Tech factory SKU number Gtsw-235 if interested call 9076321112 Related products Remington 870 12ga barrel $179.00 Add to cart Daniel Defense DD5v4 308win complete Upper $1,499.00 Add to cart Hk USP, adapter Forward Picatinny rail $55.00 Add to cart Browning high-power, 9 mm magazine $35.00 Add to cart