This guide details how to build a reliable and affordable AR-15 suitable for home defense, focusing on cost-effective yet quality components. The build emphasizes using proven parts like Anderson Manufacturing lower receivers and Magpul furniture, demonstrating that a functional and durable rifle can be assembled for around $800, or even less without an optic. The instruction comes from an experienced builder who has personally tested these components extensively.
This guide details the initial steps for building an accurate AR-15 upper receiver, focusing on critical inspection and assembly techniques. Instructor Caleb from Brownells emphasizes meticulous inspection of the upper receiver and barrel, proper lapping of the receiver face for squareness, and precise torquing of the barrel nut to ensure a tight, accurate fit. The process covers installing the barrel, adjustable gas block, handguard, and muzzle device, highlighting key torque values and potential pitfalls that can affect accuracy.
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