Polygonal rifling

The Political Cartoon “YOU’LL SHOOT YOUR EYE OUT…” made by Adam Zyglis and published for The Buffalo News on 12 December 2012 uses the Modes of Persuasion to convince Americans of the danger of our gun culture. In this cartoon it shows a young boy in pajamas with USA printed on them. He holds in his chubby hands a present of an automatic rifle, complete with a gift tag and a red bow. The title of this cartoon is a warning someone is giving the child; “YOU’LL SHOOT YOUR EYE OUT…”. Almost as a…

In this week’s article reflection, I learned more about the AR-10. Springfield Armory selected two rifles in 1956 to be tested for military use. According to Bartocci (2014), almost immediately failures erupted. These would include broken extractors, failures to feed, bolt over base, failures of the muzzle compensator, bent gas tubes and pierced primers. After failing to impress Springfield Armory, the test rifle was sent back to Armalite for correction. A year later, after correcting the…

bullets will void the warranty." (ARMORER'S MANUAL, © Glock 2009, page 82) Upon further research I found that Glock barrels use the polygonal rifling which is designed to optimize performance for jacketed bullets with inconsistencies. From what I understand if you look down a Glock barrel its in the shape of a hexagon. The polygonal rifling is not your typical rifling there are no grooves…

and why. The reasons why using coated lead bullets are a reliable and consistent form of bullet for the Glock is the topic of this article. In this article, they talk about how lead bullets are bad for the Glock due to the rifling in the barrels having deep…

around fifteen hundred and twenty. When a man named August Kotter developed barrel rifling. Armorers to black smiths spared the knowledge as each civilization adapted the technology, modifying, and adapting it as it spread. For generation this technology changed as the knowledge continued to disseminate through the decades. Although riffling has been around since the fifteenth century, it was not commonplace. True rifling can be found from the mid to late sixteenth century, but was still not a…