With the Spartan Precision Equipment combo get both the HD Picatinny and ARCA Disc Loc Bipod Adapter.Designed for high-energy precision rifles with 1.5" Arca Swiss rails, the HD Disc-Lok Adapter for Arca Swiss features an ergonomic control knob for easy forward and rearward adjustability along the rail. It securely clamps onto the Disc-Lok spigot, ensuring maximum stability while also offering adjustable friction control for precise traverse movements. FeaturesCompatible with 1.5" Arca swiss style railsAdjustable friction control lever for precise traverse movements8.8ozDesigned specifically for attachment to a Picatinny rail using a QD lever, the HD Disc-Lok adapter is intended for larger high-energy precision rifles equipped with MIL-STD rails. It securely clamps onto the Disc-Lok spigot, ensuring maximum stability while also offering adjustable friction control for precise traverse movements. FeaturesCompatible with MIL-STD Picatinny railsAdjustable friction control lever for pre...