The Smart Parts The Freak OG Insert .689 is a barrel kit designed for paintball enthusiasts. Specifically designed for the Freak barrel, this insert offers a .689 diameter for improved accuracy and performance. Manufactured by Smart Parts, a reputable brand in the paintball industry, this insert ensures high quality and compatibility with compatible barrels. Perfect for outdoor sports and sporting goods activities, this product enhances the overall experience for paintball players looking to upgrade their equipment.