The quietest 9mm ammo is named subsonic and it stays in a velocity underneath one,a hundred fps, meaning the bullet moves slower as opposed to velocity of audio. This ammunition doesn’t develop a sonic boom, or sonic crack, which happens to be listened to when firing ammunition with significant velocity. https://dmt-vape-for-sale88652.yomoblog.com/18478069/an-unbiased-view-of-9mm-ammo-shortage