To correct loud noise on your indoor or outdoor range, you must use engineering controls designed to absorb noise across all frequencies. The UL-rated Troy System is an acoustic wall system that is installed on baffles, safety ceilings, drop ceilings, and sidewalls to ensure that you meet OSHA noise exposure limits and a 1.3-second reverb time. This system is USAF approved for anti-ricochet and anti-splatter for errant 5.56 and 7.62 rounds and received an excellent acoustic rating by the US Army Corps of Engineers for use in a shooting range.
Acoustic Wall System
The UL-rated Troy System is an acoustic wall system that is installed on baffles, safety ceilings, drop ceilings, and sidewalls in shooting ranges to ensure that you meet OSHA noise exposure limits and a 1.3-second reverb time.
Troy Acoustics

Photo: Troy Acoustics