DSG Arms Ranger Rack & Ranger Rack Mini - SHOT Show 2018 Day 3

This guide details building an AR-15 upper receiver from spare parts, focusing on proper installation of the barrel, handguard, and gas system. Key steps include greasing receiver threads, torquing the barrel nut to spec (35-80 lb-ft), and ensuring gas tube alignment. It also covers essential techniques like gas key staking for bolt carrier group reliability.

The Remington MSR, designated the MK 21 by USSOCOM, is a highly accurate precision sniper rifle capable of engaging targets at extreme ranges, demonstrated by a 1.25-inch group at 100 yards. Its modular design allows for quick caliber and barrel changes, and it ships in a comprehensive kit for field deployment. While featuring dated ergonomics, its performance for its era remains exceptional.

This video features a former Navy SEAL, Jeff Gonzales, providing expert feedback on a home defense AR-15 build. He critiques the rifle's accessories, particularly the sling, and emphasizes the importance of reliable optics and the benefits of a suppressor for indoor use. The discussion highlights practical considerations for effective home defense firearms.

The Beretta ARX-160, showcased at SHOT Show 2011, is a modular, piston-driven rifle featuring ambidextrous controls and tool-less disassembly. Its design emphasizes adaptability with multiple sling points, interchangeable magazine releases, and a quick-change barrel system. While currently limited to military/defense use, future law enforcement and civilian variants are planned.

Fostech unveiled a 20-round .50 BMG drum magazine for Barrett M107 and 82A1 rifles, constructed from billet machined aluminum. They also introduced the Fostech Rader, a lightweight .308 rifle featuring a proprietary magnesium aluminum alloy and ambidextrous controls. The drum mag is priced at $1599 with a Q3/Q4 availability, while the Rader rifle is expected around $3000 with a Q4 release.

Testing a Remington 158gr SJHP .357 Magnum load from a 16-inch Rossi M92 reveals impressive performance, achieving 1709.6 fps. The round exhibited significant fragmentation and penetration of 20.1 inches in ballistic gel, behaving more like a rifle cartridge due to its velocity. This challenges typical handgun round terminal ballistics expectations.