B. Engineering Development of Rifle, 7 .62mm, M14E2. 1. Rifle, 7.62mm, M14 and Rifle, 7.62mm, M15 were classified standard on 23 May 1957. The M15 Rifle was the heavy barrel model of the M14 Rifle intended to be used for automatic fire. Tests by the Army and the Marine Corps led to the adoption of the M14 Rifle ·with the M2 Bipod and to the obsolescence of the M15 Rifle on 17 December 1959.
The Mk 14 is a battle rifle (and defacto DMR, or Designated Marksman Rifle) chambered in 7.62 x 51mm NATO issued to fill in a couple of effective engagement roles, particularly that of “designated marksman”.
Here’s my Mk 14 Mod 2 replica, which uses the heavy barrel chassis. You can also see the large blocky SAGE op rod guide that only fits on the heavy profile barrel.
