Gamo releases the Whisper Fusion Technology for the Whisper Fusion Pro and Whisper Fusion air rifles for 2013. This is the latest in noise dampening technology, integrating two technologies. The normal Whisper barrel, plus a Bull Whisper barrel are fused together to create this new double-integrated sound moderator. The Whisper Fusion technology make any air rifle up to 89.5 percent quieter than a standard air rifle. This is accomplished as the pellet travels through two different chambers, compressing and preventing noise expansion.