A U.S. Army Reserve 3 Gun match earlier this month involved some things old, new and unusual for Soldiers competing in the Best Warrior Competition.

The above video of the BWC match, held Sept. 4-10 at Fort McCoy, Wisconsin, shows a field of 40 reservists taking turns showing off their skills with the M4 Carbine-- the military's standard infantry arm, the new Sig Sauer M17 Modular Handgun System pistol, and the downright unusual M26 shotgun. 

According to the Army, the M26 Modular Accessory Shotgun System was introduced in 2010 and is an under-barrel shotgun attachment for the M16/M4 family of firearms. It can also be fitted with a pistol grip and collapsible stock to act as a stand-alone weapon.

It is a straight-pull bolt action 12 gauge that is manually cycled and has a 3- or 5-round detachable box magazine, a slow rate of fire which fits into its most common purpose-- breaching doors rather than acting as a combat shotgun. (Photos: U.S. Army)

Besides the 3 Gun match, the 2020 BWC evaluates Soldiers "on their individual ability to adapt to and overcome challenging scenarios and battle-focused events that test their technical and tactical abilities under stress and extreme fatigue," as noted by the Army Reserve. 

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