Early in 2009 Bushmaster, the primary manufacturer of Carbon-15 pistols/rifles, has begun to include the ejection port dust cover and forward assist in their Carbon-15 M4 rifles.
After firing, spent cartridge casings are removed through an ejection port located at the base of the receiver (a spring-loaded dust cover of the MG42 type covers the ejection port).
Remote sensing data applications enable the improvement of meteorological forecasting, as satellite data provide better information on cloud cover and dust layers, and their evolution