This review covers the Harrington & Richardson 653 rifle from PSA, a modern reproduction of a classic AR-15 variant. The rifle features a 14.7-inch pinned and welded barrel for a legal 16-inch overall length, a pencil profile barrel made of 4150 Chrome Moly Vanadium steel, and an integrated carry handle with peep sights. It also includes M4 feed ramps and a modern bolt carrier group made of Carpenter 158 steel for enhanced reliability. The reviewer highlights the rifle's attention to historical detail while incorporating subtle modern enhancements, making it an attractive option for collectors.
This video details a heat stress test for a new 16-inch Kinetic Manufacturing barrel intended for the WWSD project. The test involves firing an initial five-round group, followed by a 30-round magazine dump into the dirt, and then another five-round group to assess any shift in point of impact due to heat. The results indicate the barrel's heat treatment and stress relief are effective, as the second group's center remained consistent with the first, despite external factors like wind.
This review of the Trojan Firearms Helen rifle highlights its unique design features, including a pencil profile stainless steel barrel chambered in .223 Wylde, an adjustable mid-length gas system, and a lightweight, reduced-mass bolt carrier group. The reviewer is impressed by the intelligent design choices, such as the matching receiver and handguard lines, ambidextrous controls, and the use of quality materials like 7075 aluminum. The rifle is presented as a well-thought-out build rather than just an assembly of off-the-shelf parts.
This video provides an in-depth look at modern firearm barrel manufacturing processes, focusing on the differences between Nitride (QPQ) and Chrome lining. Nathan from Faxon Firearms explains the metallurgical science behind these treatments, their impact on accuracy, corrosion resistance, and heat management. The discussion also covers various rifling methods and the critical importance of stress relief for thin-profile barrels.
This video from Iraqveteran8888 introduces new 2017 products from Faxon Firearms and Fostech. Expert insights cover Faxon's MuzzLok muzzle brake system, which uses a unique timing ring for secure installation without crush washers, and their slim-profile muzzle devices allowing low-profile gas blocks to slide over. The guide details the installation of the MuzzLok brake. The video also highlights Fostech's lightweight magnesium alloy receivers and touches on Trijicon optics and Geissele accessories.
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