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  2. Push feed and controlled feed - Wikipedia

    en.wikipedia.org/wiki/Push_feed_and_controlled_feed

    Most controlled feed mechanisms use a fixed mechanical ejector attached to the receiver, which results in the bolt having to be pulled all or almost all the way back to eject the spent casing. This can give a marginally quicker cyclic rate with a push feed action, since the bolt no longer has to be repeated as far or all the way back. [10]

  3. Long range shooting - Wikipedia

    en.wikipedia.org/wiki/Long_range_shooting

    The mrad system allows the usage of virtually all kinds of shooting targets, like paper, steel or clay targets, golf balls, soda cans, etc. Scoring is made with points attributed to the angular measurements of the target according to pre-defined tables. For some stages of Module 2 and 3, the so-called hit factor is applied (the score on the ...

  4. Semi-automatic firearm - Wikipedia

    en.wikipedia.org/wiki/Semi-automatic_firearm

    The Colt AR-15, a type of semi-automatic rifle. A semi-automatic firearm, also called a self-loading or autoloading firearm (fully automatic and selective fire firearms are also variations on self-loading firearms), is a repeating firearm whose action mechanism automatically loads a following round of cartridge into the chamber and prepares it for subsequent firing, but requires the shooter to ...

  5. Longest recorded sniper kills - Wikipedia

    en.wikipedia.org/wiki/Longest_recorded_sniper_kills

    This list is not exhaustive, as such data is generally not tracked nor managed under any official procedure. For example, the 2002 Canadian Army sniper team that saw two soldiers set consecutive new records (Arron Perry at 2,310 m (2,526 yd) and Rob Furlong at 2,430 m (2,657 yd)), also made a number of kills at 1,500 m (1,600 yd) that are not counted here. [22]

  6. What do you know about the AR-15 rifle? Here are five facts ...

    www.aol.com/news/know-ar-15-rifle-five-170837426...

    According to the National Shooting Sports Foundation, there were 20 million AR-15 style weapons as of 2020. From 1990 to 2020, the U.S. imported or manufactured over 24.4 million. In 2020 alone ...

  7. Physics of firearms - Wikipedia

    en.wikipedia.org/wiki/Physics_of_firearms

    From a thermodynamic point of view, a firearm is a special type of piston engine, or in general heat engine where the bullet has a function of a piston. The energy conversion efficiency of a firearm strongly depends on its construction, especially on its caliber and barrel length.

  8. What can an AR-15 do to the human body? A trauma surgeon ...

    www.aol.com/news/ar-15-human-body-trauma...

    An AR-15 or similar rifles are semiautomatic, military-style weapons that can fire at least 30 rounds, the number of bullets a magazine typically carries, according to NPR. The term semiautomatic ...

  9. AR-15 style rifles rose to iconic status in US via ... - AOL

    www.aol.com/news/ar-15-style-rifles-rose...

    A bill in Congress supported by conservative representatives even wants to designate the AR-15 style rifle as "the National Gun of the United States." The AR platform of rifle - used in several of ...