Colt pistols even armed both sides of the Crimean War ... many of these issues were resolved and improved. The M16A1 became the standard rifle for both the Army and Marine Corps.

Among the items that the bureau sold were several demilitarized examples of the very first AR-15 produced by Colt – the Model ... that the XM16E1 and the M16A1 would ultimately experience ...

The handguard is ribbed and visually distinct from the M16A1’s smooth handguard. The flash hider is also different from the stock Colt flash hider. The buttstock has a cutout on the lower half ...