M16A4 vs M4 carbine: how to tell them apart
Two versions of the same family. Name the wrong one in Spotrep and you still get family points, but the exact model scores most.
M16A4
What gives it away
Full-length AR-15 pattern rifle with a fixed buttstock, a 20-inch barrel, a flat-top rail and a long railed handguard.
Used by
USA, Philippines, Iraq and many others
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M4 carbine
What gives it away
AR-15 pattern: straight-line stock, collapsible butt, forward assist and a short barrel under a railed handguard.
Used by
USA and many others