Using gas compression technology to progressively absorb the shock of recoil, the NRA Precision Sighting Machine allows hands-free firing for precise accuracy assessment. The Machine is constructed of super-tough, powder coated welded steel, and it’s engineered for total immobilization of your rifle. Padded contact points prevent damage to your valuable firearms. Designed for secure bolting to your shooting bench, the package also includes detailed construction plans for a portable, clamp-down board to enable its use on public ranges. Simply secure your rifle in the Machine, attach the included hands-free hydraulic trigger release, align with the target using the Machine’s numerous fine-tuning windage and elevation adjustments, and fire. The integrated gas cylinder will absorb the recoil and return your firearm immediately to battery. It’s the perfect tool for sighting or verifying accuracy. Weighing in at just 13 lbs., it’s completely portable, and it doesn’t require the addition of weights or sandbags for stability. For use with all popular calibers between 7mm and .375 H&H (avoid using with guns having less than 18-20, or more than 45 ft. lbs. of recoil). Includes NRA Precision Sighting Machine, security straps, spirit level, hydraulic trigger release and instructions. Imported.