Spartan Precision Equipment Classic Gunsmith Adapter Brass & Dirt Plug Black. These are designed to be bonded into wooden and synthetic rifle stocks by professional gunsmiths and competent individuals. Specifications for Spartan Precision Equipment Classic Gunsmith Adapter Brass & Dirt Plug: Manufacturer: Spartan Precision Equipment Color: Black Weight: 0.8 oz Features of Spartan Precision Equipment Classic Gunsmith Adapter Brass & Dirt Plug Brass Enables use of our Javelin Bipod in fixed target and traversable hunting modes Package Contents: Spartan Precision Equipment Classic Gunsmith Adapter Brass & Dirt Plug Spartan Precision Equipment SP02-06-R: Classic Gunsmith Adapter Brass & Dirt Plug Black