The USMC Precision Weapons Section at Marine Corps Base Quantico built all DMRs.

[3] The Marine Corps replaced the DMR with the M39 Enhanced Marksman Rifle on a one-for-one basis.

[4] In 1989, the USMC began a program to upgrade M14s not decommissioned into DMRs by designing them with fiberglass stocks and new barrels.

[8] The DMR can fire precisely up to 1,000 yards if M118LR special ball ammo is used.

[9] The DMR design facilitates repairing or replacing of the sight mount, barrel, bolt, and other key assemblies at the third echelon maintenance level.