Matches in DBpedia 2016-04 for { ?s ?p "Polygonal rifling /pəˈlɪɡənəl/ is a type of gun barrel rifling where the traditional lands and grooves are replaced by \"hills and valleys\" in a rounded polygonal pattern, usually taking the form of a hexagon or octagon.Polygons with a larger number of edges provide a better gas seal in relatively large diameter polygonally rifled bores. In the Glock pistol, for instance, octagonal rifling is used in the large diameter .45 ACP bore, which has an 11.23 mm (0.442 in) diameter, since it resembles a circle more closely than the hexagonal rifling used in smaller diameter bores."@en }
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- Polygonal_rifling abstract "Polygonal rifling /pəˈlɪɡənəl/ is a type of gun barrel rifling where the traditional lands and grooves are replaced by \"hills and valleys\" in a rounded polygonal pattern, usually taking the form of a hexagon or octagon.Polygons with a larger number of edges provide a better gas seal in relatively large diameter polygonally rifled bores. In the Glock pistol, for instance, octagonal rifling is used in the large diameter .45 ACP bore, which has an 11.23 mm (0.442 in) diameter, since it resembles a circle more closely than the hexagonal rifling used in smaller diameter bores.".