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The AR-15's most distinctive ergonomic feature is the carrying handle and rear sight assembly on top of the receiver. This is a by-product of the original ArmaLite design, where the carry handle served to protect the charging handle. [14] As the line of sight is 2.5 in (63.5 mm) over the bore, the AR-15 has an inherent parallax problem. At ...
Initial sales of the Colt AR-15 were slow, primarily due to its fixed sights and carry handle that made scopes difficult to mount and awkward to use. [84] Military development of compact military AR-15 carbines encouraged production of a 16-inch (41 cm) barreled civilian SP1 carbine with a collapsible buttstock beginning in 1977.
The Canadian company Colt Canada (formerly Diemaco) licensed production of a rifle (Colt Model 715) and carbine (Colt Model 725), but later went on to produce an entire line of AR-15/M16 pattern weapons developed independently. In May 2005, Colt's Manufacturing Company acquired Diemaco, and the name was changed to Colt Canada.
The initial SAINT offering was an AR-15 style rifle with a 16-inch (410 mm) barrel and chambered in 5.56 NATO, introduced in November 2016. [5] It was subsequently named the 2017 tactical gun of the year by American Rifleman magazine. [6] In November 2017, a pistol version including a forearm brace was introduced. [7]
Fixed front iron sight, flip-up rear The Ruger AR-556 is a semiautomatic AR-15 style rifle manufactured by U.S. firearms company Sturm, Ruger & Co. Introduced in 2014 as an entry-level AR-15 using a direct impingement action, with variants since being released such as the upgraded AR-556 MPR (multi-purpose rifle) in 2017 [ 1 ] and the AR-556 ...
The barrel was also threaded for a standard M16A1 birdcage flash suppressor and the resulting barrel was just shy of 13-inch overall, and a CAR-15 type collapsible buttstock was fitted to replaced the fixed M16A1 fixed buttstock, thus they approximate the size of CAR-15 type carbines.
FNC magazines will function in AR-15/M16-type rifles but the follower will not hold the bolt open on the last round unless they have been modified with an M16-type follower. [5] The plastic-coated, lightweight alloy skeleton stock folds to the right side of the receiver. A fixed synthetic buttstock is also available.
The mount can use traditional iron sights or the ELCAN C79 Optical Sight 3.4×28 optical sight, both of which can be adjusted for individual eye relief. The optical sight was designed for the C9 light machine gun and includes horizontal and vertical mil-bars used for range determination and deflection, and a tritium glow-in-the-dark aiming post ...