Gunsmith Adapters are designed for hunters who want the ultimate in discreet, lightweight attachment systems for their Spartan bipod or tripod. Designed to be bonded into wooden and synthetic rifle stocks by professional gunsmiths and competent individuals, the adapters won’t let you down no matter how demanding the terrain. Keep dirt and mud out of your adapter when not using your bipod or tripod with the dirt plug. Compatible with Spartan 12mm adapters.