The M-14 is a selective-fire, gas-operated automatic rifle created in 1954 by Springfield Armory. It fires .303 and utilizes a 20-round magazine. The gas system features an automatic gas cutoff feature, which limits the amount of gases used to operate the weapon. The rotating bolt has a roller instead of the simple lug, which connects the bolt to the operating rod. The M-14 succeeded the M1 Garand as the standard US Army rifle from 1959 to 1970, until replaced by the M16A1. It is a reliable weapon offering high lethality, long range and good penetration.
With a better range but lower damage than the AK-47, and the same AP costs as a bunch of similar weapons, this weapon is more suited to a sniper. Because you only find it in a place without any 7.62mm rounds, the M-14's real use is simply going to be a backup weapon.
Peoria, x3 can be found in a locker in the South West part of the store
Although the description of the weapon says the M-14 chambered for 7.62mm ammunition, it actually uses .303, probably an oversight from the developers to correct the description.