Even though they very much falls in to the class of obsolescence now, the RIS and RAS are classified as the handguards that began the continuous evolution which has designed the AR-fifteen forends We've got currently available, which by themselves are arguably probably the most essential factors in ergonomic usage https://knightsarmamentm4quadrail21864.daneblogger.com/26349046/what-does-kac-ras-rail-mean