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The AR-15 rifle is a lightweight, air-cooled,
magazine-fed rifle that's actuated by gas
piston technology or direct impingement. Designed originally for the U.S. military,
this popular firearm features a bolt and carrier mechanism. As the carrier
fills with high-pressure gas, the bolt unlocks and moves rearward to extract
the empty cartridge case from the chamber. When the neck of the cartridge clears
the barrel extension, a spring-loaded ejector forces the case through a port on
upper receiver.
First built by ArmaLite during the 1950s, the
AR-15 is now manufactured
by many different firearms companies, including Colt, Bushmaster, and Stag
Arms. Popular among hunters, shooters, and law enforcement agencies, this
lightweight rifle is available in a variety of sizes and configurations, but
made mainly of aluminum alloys. The AR-15's accuracy and weight contribute to
its popularity, and gun owners often have questions about the best way to clean
and polish components such as the chamber.
Gun Tools for AR-15 Maintenance
At the website for Guns Magazine, an on-line
article called AR-15
Building Tools - Part II described what the author called "handy"
items for firearms maintenance. The list included rear-sight spring tools, a
bolt disassembly fixture, and a front takedown pin detent installer. The
gunsmith also emphasized the importance of polishing AR-15 chambers to ensure
that spent cartridge cases eject properly. The gun polishing tool he mentioned
by name was the Flex-Hone from Brush Research Manufacturing (BRM).
Flex-Hone
for Firearms tools are used to polish and surface finish rifles, shotguns,
pistols, revolvers, and paint ball guns. Designed for smooth bores, BRM guns
tools are ideal or any size or type chamber, cylinder, barrel, slide, or
magazine tube. In the case of AR-15 chambers, the Flex-Hone for Rifles safely
removes residues, machining marks, corrosion, oxidation, and surface
imperfections while imparting a wear-resistant finish. BRM rifle brushes
feature silicon carbide (SC) abrasive and come in overall lengths (OALs) of 6",
8" 12", and 14". The length of the abrasive part is 1-5/8".
Flexible
Honing for AR-15 Rifle Chambers
Flex-Hone technology uses a low-temperature,
low-pressure abrading process to produce a long wearing surface with a minimum
of stock removal, ensuring that the bores of your firearms remain at the
precise dimensions required. Built with a double-wire metal stem, Flex-Hone
tools can be used with either handheld electric tools or machine centers. As this video shows, BRM gun
tools are also easy-to-use. They're trusted by hobbyists, professional, gunsmiths,
and the firearms industry alike.
Self-centering, self-aligning to the bore,
and self-compensating for wear, flexible hones must be used with a good quality
cutting oil or honing fluid. This helps to minimize heat, and prevents the tool
from loading. In addition to removing oxidation and corrosion, flexible honing
produces a plateau finish that optimizes lubrication. To impart this ideal
surface finish, Flex-Hone technology also
removes highly-stressed surface areas that can contribute to the formation of
corrosion. Smoother surfaces also
prevent plastic buildup, and support the performance of firearms such as the
AR-15 rifle.
Author's Note: This CR4 blog entry originally
appeared in the BRM
Flex-Hone blog.
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