Barrett’s bolt-action Multi-Role ... selected the Mk13 Mod 7 sniper rifle, chambered in .300 Winchester Magnum, as a much-needed and long-overdue replacement for the M40 sniper system that ...

The M40A6 is a heavily modified version of the original M40, which fires a 7.62mm round ... All three legacy rifles are bolt-action.

With roots dating back to 1966, the USMC M40 stands as a timeless sniper rifle classic. Built on the Remington 700/40X bolt action and refined by armorers at Marine Corps Base Quantico ...