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General purpose machine gun: A machine gun intended to fill the role of either a light machine gun or medium machine gun, while at the same time being man-portable. Grain is a unit of measurement of mass that is based upon the mass of a single seed of a typical cereal. Used in firearms to denote the amount of powder in a cartridge or the weight ...
Its shot-to-shot variation is expected to be better than 1 minute of angle (MOA) with match ammunition. This level of accuracy is only average compared to most modern bolt action sniper rifles, but is still exceptional for a semi-automatic rifle and at one time was claimed to be "one of the most accurate semi-automatic sniper rifles in the world."
The SSG 08 is advertised as capable of sub-MOA accuracy with proper ammunition. The SSG 08 is based on Steyr's SBS rotary bolt action with four frontal locking lugs, arranged in pairs. It also features free-floated, cold hammer-forged heavy barrels , which are available in 20 inch ( .308 Winchester ), 23.6 inch ( .243 Winchester , .308 ...
The rear sight features a windage drum that can be adjusted during zeroing with about 1 MOA increments. The front sight is a tapered round post of approximately 0.0625 in (1.59 mm) diameter adjustable during zeroing in about 1 MOA increments. A cartridge or tool is required to (re)zero the sight line. [118] [116]
The round also increases accuracy, from 3–5 minute of angle (MOA) with the M855 from an M4A1 barrel to 1.71 MOA at 300 yards and 1.67 MOA at 600 yards from a 14 in (360 mm) SCAR-L barrel. [ 50 ] For general issue, the U.S. Army adopted the M855A1 round in 2010 to replace the M855.
The M1 ammo crate held a total of 1,000 belted or linked rounds packed in 4 M1 ammo boxes and the later M1A1 ammo crate held a total of 1,000 belted or 1,100 linked rounds packed in M1A1 ammo boxes. There were two .50 M2 ammo boxes to a crate (for a total of 220 belted or 210 linked rounds) with a volume of 0.93 cubic feet.
The AX308 is a stand-alone 7.62×51mm NATO variant. It is chambered in 7.62×51mm NATO/.308 Winchester and has a smaller short action with a bolt diameter of 20 mm (0.79 in). The AX308 has a 20 MOA forward canted optical rail optimised for long range shooting.
Early MRADs had a 30 MOA slope full length 21.75" standard 1913 Picatinny rail on top of the receiver/handguard. Current MRADs feature a 20 MOA slope rail. Current MRADs feature a 20 MOA slope rail. Shorter 2"-4" Picatinny rails sections may be user positioned at 3, 6, and 9 o'clock at several fore/aft positions along the handguard.