PDI has been around for quite some time. They have been well known for creating remarkable airsoft products. Products such as their inner barrels for gas blow back pistols has been proven to perform exceptionally well. They have continued to expand their inventory to produce tightbore barrels such as the Raven barrel. The overall length of this Raven barrel is 375mm with an inner diameter of 6.03mm. With the bore of the barrel being smaller in diameter, maximum air flow is achieved behind the bb as well as a more accurate and stable shot.