PaSSive Shoot shows what he says to be the ultimate gas blowback rifle build. In collaboration with BLKFOX this build is based on the GHK M4 URGI 10.3 CO2 GBB rifle, aiming to recreate a military-style AR. They swap out numerous components, including the flash hider, handguard, grip, and stock, along with installing a real Geissele buffer tube. The build also features various accessories like a foregrip, dummy suppressor, and rifle light, plus two distinct optic setups: an EOTech for indoor use and a Vortex Razor with an Acro P-2 for outdoor play. After all the work done, they are pleased with their custom project.