M21

The M21 is the marksman rifle adaptation of the M14 designed in 1969. The United States Military wanted an accurate and effective sniper rifle during the Vietnam War. They chose the M14 due to its high accuracy and reliability. Hence, the Rock Island Arsenal modified many with 3-9x scopes. These rifles were not designated as "M21" until 1975 and remained the US Army's standard sniper rifle until 1988.

Battlefield Vietnam
In Battlefield Vietnam, the M21 is an option for the ARVN and USMC Scout kits. It has a 10-round magazine, high recoil, high damage, high accuracy and a medium rate of fire. It can kill in 2-3 shots, or a single head shot. It is equipped with a 6X scope meant for long range engagements. It can be considered an equivalent to the NVA SVD.

When using the M21, one should definitely go for sniping at long ranges, because, despite its small cross hairs, hip firing can be a wasteful and ineffective, even in close quarters. When sniping, naturally, aiming for the head is recommended, for easier kills and especially conserving ammo, as the M21 only comes with 2 spare magazines. Generally, manually reloading with the M21 in unadvised unless there is very few rounds left in the current magazine. A good way for ammo conservation would also to be near an Ammunition Box.

Battlefield Heroes
The M-21 sniper rifle has a desert camo and a very high rate of fire. It rewards people with with a trigger finger rather than an accurate eye.

Winter Camo M-21
The winter camo M-21 is the exact same as its desert counterpart exept for the winter camo.

Battlefield: Bad Company 2: Vietnam
In Battlefield: Bad Company 2: Vietnam, the M21 is a sniper rifle issued to the Recon kit. The M21 is semi-automatic and has a 10-round magazine. It uses a sniper scope, with a notably lower zoom that the other sniper rifles', and it allows for some peripheral vision, comparatively similar to the 4X Rifle Scope. It is notably identical to the SVD in stats. Because of the weapon's low powered scope and good peripheral vision it is much more suited for close to medium range combat than the M40 or SVD

Videos
thumb|300px|left|Gameplay with the M21 in Battlefield: Bad Company 2: Vietnam at [[Phu Bai Valley in Hardcore Rush and Operation Hastings in Hardcore Conquest]]