M395 DMR

The M395 Designated Marksman Rifle (DMR) is a gas-operated marksman rifle designed by Misriah Armory and used by the United Nations Space Command.

Overview
The M395 DMR is the successor to the M392 model, which was used throughout the Insurrection and the Human-Covenant War. The newer model was designed to accommodate Spartan operators and is consequently heavier. Though the M392 was discontinued from Marine Corps and Navy service in favor of the BR55 series, the M395 is fielded by all branches of the UNSC. It is used primarily by light infantry scouts requiring powerful, long-range precision fire.

Design specifications
The M395 is an air-cooled, magazine-fed, gas-operated semi-automatic bullpup rifle that fires 7.62x51mm ammunition, with a maximum effective range of 950 meters. It accepts a fourteen-round detachable box magazine in contrast to its predecessor's fifteen-round magazine. Unlike its predecessor (capable of semi-automatic and fully automatic fire) the M395 is restricted to semi-automatic fire. The weapon's mounted optic is capable of 3x magnification. The ambidextrous magazine release buttons are located directly above the magazine well, behind the trigger. The safety, also ambidextrous, is mounted slightly behind the trigger.

Gameplay
The DMR takes one more trigger pull to kill than the battle rifle, thus having a slightly slower kill time. However, due to its semi-auto fire mode, 3x scope magnification, and lack of muzzle climb, the DMR is more effective at longer ranges. This makes it much more desirable on larger maps with open sightlines. The DMR falls short of the Lightrifle's long range effectiveness, but is still somewhat flexible at medium and close ranges and has a larger magazine. Arguably, this makes the DMR one of the most utilitarian weapons in Halo 4.

Changes from M392 DMR in Halo: Reach

 * One less round per magazine
 * Default extra magazine limit decreased from 4 (60 rounds) to 3 (42)
 * Heavily decreased bloom, with maximum bloom not exceeding the outer reticle

Changes from Halo 4 to Halo 5: Guardians

 * Zoom function replaced with aiming down a new physical scope
 * New scope lacks an external ammo indicator

Trivia

 * In the final release version of Halo 4, the HUD icon for the M395 is actually that of the M392 DMR from Halo: Reach. Ironically, some pre-release screenshots of the game show a different HUD icon depicting the correct version of the weapon, albeit lacking the front sight.
 * As with the M392 DMR in Halo: Reach, the M395 erroneously ejects spent M634 X-HP-SAP shell casings rather than the M118 7.62x51mm round it actually uses. In addition, the weapon's in-game model lacks an ejection port.
 * The UNSC Infinity Briefing Packet erroneously states that the M395 uses a fifteen-round magazine. While this is true of the M392, the M395 carries fourteen rounds.

Videos
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List of appearances

 * Halo 4
 * Spartan Ops
 * Halo: Escalation
 * Halo: Nightfall
 * Halo 5: Guardians