Blac-Rac Weapon Retention System w/LOCK Black/Gray. It will allow you to securely mount your firearm to your truck open frame vehicle (UTV or ATV) boat aircraft or a wall in your home. Perfect for shotguns and hunting rifles the Blac-rac conventional stock adapter will replace the trigger post on your Blac-Rac to accommodate firearms that dont have pistol grips. The adapter is easy to install and replace in the field. Specifications for Blac-Rac Weapon Retention Systems: Manufacturer: Blac-Rac Color: Black/Gray Length: 8.2 in Height: 7.1 in Width: 4.8 in Condition: New Package Contents: Blac-Rac Weapon Retention Systems Blac-Rac 1070 weapon mount Conventional stock adapter Blac-Rac 7010-00000: Weapon Retention System w/LOCK Black/Gray