CARBINE CRAZY
While some CO2 guns are totally original designs, others are inspired by powder-burning firearms, with the Brothers In Arms series of historical replicas from Lee-Enfield (Guns) falling firmly into the latter category.
The M4A1 was developed by Colt and is in service with multiple operators around the world, notably the US Army, with the Marine Corps due to follow suit.
But while that gun fires 5.56x45mm NATO rounds, this CO2 variant shoots 4.5mm BBs. It features all-metal construction throughout the barrel, receiver and the 18-round magazine.
Plenty of plastic has been used here as well, most notably the handguard, pistol grip and telescoping butt stock, but that’s the case with the original M4A1 too.
The 5.56mm M4A1 was accepted into service by the US military in 1994. It first saw action in the hands of
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