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The Parker Hale L81A1 is a shorter version of the Parker Hale M82 rifle 7.62×51mm (.308) rifle, adopted as a cadet rifle in addition to the .22 LR Rifle No.8. It can trace its lineage back through both the M82 sniper rifle and the Parker-Hale 1200TX target rifle.
While MOA sights have traditionally been popular in the U.S., scope sights with mrad adjustments and reticles are now also becoming increasingly popular in the U.S. [14] The most common reticles used today in red dot sights both for handguns and rifles are small dots covering between 0.6 and 1.6 mrad (2 to 5 MOA).
Such iron sights are often used as secondary sighting systems in case the main weapon sight (typically an optical sight such as a telescopic sight or red dot sight) malfunctions or becomes unsuitable for the tactical situation at hand, and are therefore referred to as backup iron sights (BUIS).
The US House Committee on Armed Services noted as far back as 1975 on the suitability of the use of reflex sight for the M16 rifle, [28] but the US military did not widely introduce reflector sights until the early 2000s with the Aimpoint CompM2 red dot sight, designated the "M68 Close Combat Optic".
The rifle is guaranteed to have a standard 0.5 moa (0.15 mrad) accuracy and uses a 1-6 lbs (4-27 N) adjustable match trigger. [5] The rifle is constructed of polymer (available in olive drab, tan, or black), aluminum, and steel. The handguard and upper receiver use a Picatinny rail system for attaching accessories such as a bipod or a ...