Gunsmith BATON USP CO2 GBB Sound Improvement
OptimusPrime
24 Mar 2021
Gunsmith BATON in Japan are also making their custom gas gun series, especially CO2-powered airsoft gun and the show a quick video of their USP project with sound improvement... "BH-USP Tractical CO2GBB test video under development. Difference in firing sound due to improvement of internal parts."