Intro: Indoor ranges take a different kind of punishment than a shoot house - sustained, repeated fire into the same backstop zones, lane after lane, year after year. Amidon's Indoor Small Arms Range (ISAR) system is built around ArmorBlock specifically to hold up to that pattern of use.

The Legacy Problem

Standard CMU-and-steel-liner construction, the traditional approach, tends to spall and crack under sustained impact - the steel liner does the ballistic work, and the masonry around it isn't built to take the same punishment. Over time that shows up as cracking, ricochet risk, and rising repair costs.

How ArmorBlock Is Different

ArmorBlock is purpose-built rather than adapted from general construction material - high density, engineered for consistent multi-hit performance rather than degrading after the first few impacts. The system is designed around tapered impact zones and backstop geometry that absorbs high-velocity rounds and reduces ricochet, with protected partitions between shooter stalls for sound control and separation.

What It Adds Up To

Higher safety margins from reduced ricochet and contained rounds. Lower lifetime cost from fewer repairs and less downtime. And a more straightforward path through UFC and USACE compliance requirements, since the system is engineered around those standards rather than retrofitted to meet them.