Watch the Middle Aged Gamer give his take on the VFC Knights Armament L403A1/KS 1 gas blowback rifle... "This is the VFC Knights Armament L403A1 / KS-1 GBBR Review. In this video we take a deep dive in to VFC's latest and greatest GBBR to date. This GBBR is the first to feature VFC's latest GBBR system the " Evo " system or what most are referring to as the V4, with new Hop and Bolt carrier as well as several other updates we dive in to see if this really is VFC's Best."