M99 SASR

The M99 Special Application Scoped Rifle, (formally known as the Long Range Sniper Rifle, Caliber .50, M99), is a sniper rifle produced by Misriah Armory and used by the UNSC Armed Forces.
== History ==
The M99 entered service with the UNSC Army in 2430. Because of its modular design and ongoing manufacturer support, the rifle was adopted by all branches in 2492, replacing the ageing M78 MSR and M141 AMR in Marine Corps service.
During the Insurrection, the M99 SASR proved to be a valuable asset. The 11.43x77mm round, introduced alongside the Precision Marksmen configuration, offered a significant increase in range, accuracy and stopping power over the M78's .338 Lapua magnum cartridge, while the Anti-Materiel variant's use of .50 caliber ammunition significantly lowered production costs and eased logistics due being both standard ammunition for heavy machine guns and cheaper to mass-manufacture than the 14.5x114mm round, which was used exclusively in the M141.
== Design details ==
The M99 SASR is a semi-automatic, recoil-operated sniper rifle that fires 12.7x99mm polymer-cased ammunition from an eight-round detachable box magazine. The charging handle and ejection port are located on the right side of the weapon. The rifle is designed in the conventional layout, with the magazine and operating system located in front of the trigger.
The M99 has an overall length of 140 centimeters in standard configuration and is highly modular. It is fitted with an Oracle optic that features two levels of zoom and both night-vision and thermal view modes, in addition to showing range, elevation and wind speed. The rifle is also equipped with a recoil-compensation system, backup iron sights, and a folding bipod.
== Variants ==
M99-AM: anti-materiel rifle, effective against light vehicles and armored infantry at long range, also employed by EOD units to detonate IEDs and mines at safe distances.
M99-PM: precision marksman rifle, chambered for .450 caliber ammunition, issued to Marine Corps scout snipers.