6mm Airsoft BB vs. 4.5mm Metal BB
OptimusPrime
22 Jul 2019
Max Cherepenin takes the plastic airsoft BB and compares to the 4.5 metal BB in this video. Also, we would never recommend using spherical metal BBs for use in airsoft... "Hope you guys enjoy this video with the comparison between the two types of bb sizes that are commonly found in the replica firearm world."