What does polygonal rifling look like?
What does polygonal rifling look like?
What is Polygonal Rifling? Polygonal rifling uses hills and valleys instead of the sharp edged lands and grooves. The hill/valley configuration makes the barrel look like either a hexagon or an octagon. Both of those shapes are polygons, hence the name.
What brands of firearms have polygonal rifling?
The Widespread Nature of Polygonal Rifling While Glock is the best-known company that uses this type of rifling, there are other companies that use this type of rifling as well. Some of the other examples include Heckler and Koch (mentioned above), Magnum Research. CZ, Kahr Arms, and Tanfoglio.
How does polygonal rifling differ from traditional rifling?
Polygonal rifling (/pəˈlɪɡənəl/ pə-LIG-ə-nəl) is a type of gun barrel rifling where the traditional sharp-edged “lands and grooves” are replaced by less pronounced “hills and valleys”, so the barrel bore has a polygonal (usually hexagonal or octagonal) cross-sectional profile.
Is the Glock marksman barrel polygonal?
These barrels feature an enhanced polygonal profile with right-hand twist and a small rifled profile on either side of the main polygonal field impression (Hernandez et al., 2016). Keywords: ABIS; Comparison microscope; Evofinder(®); GMB; Glock Gen5; Glock Marksman Barrel.
What is the best barrel twist for accuracy?
The 1:8 twist barrel is the most versatile of the bunch. This twist rate gives you the most flexibility, effectively stabilizing projectiles up to 80 grains but not over stabilizing lighter ammunition. The 1:9 barrel is best for stabilizing lighter and mid-weight bullets ranging between 45 and 77 grains.
Are Glock Gen 5 barrels polygonal?
The Glock company’s newest generation of pistols (G42/43, Gen5) is equipped with so-called “Glock Marksman Barrels” (GMB). These barrels feature an enhanced polygonal profile with right-hand twist and a small rifled profile on either side of the main polygonal field impression (Hernandez et al., 2016).
What is the difference between traditional and polygonal rifled barrels?
In traditional rifling, ‘tools’ such as buttons or broaching bits are used to either press or cut grooves in the bore giving the barrel a defined rate of twist. In polygonal-rifled barrels, the barrel (and hence the bore) is cold hammer forged (or otherwise twisted) creating swells or mounds, also giving the bore a defined rate of twist.
What tools are used in rifling a barrel?
In traditional rifling, ‘tools’ such as buttons or broaching bits are used to either press or cut grooves in the bore giving the barrel a defined rate of twist. In polygonal-rifled barrels, the barrel (and hence the bore) is cold hammer forged (or otherwise twisted) creating swells or mounds,…
Is a polygonal rifling on a Glock a real rifling?
Glock features Polygonal barrel rifling on all of its handguns. But, is it truly a ‘polygonal’ rifling as the Austrian manufacturer and most hardcore fans claims? We should never take gun technology for granted, even when the matter may appear trivial.
What is traditional rifling?
Traditional rifling (left) and polygonal rifling. Firearms identification, a broad term used in forensic science to describe the study of what is usually incorrectly referred to as “ballistics”, includes the study of the tool marks left on a bullet from the lands and grooves as it passes down the barrel.
