Time to Build Your AR-10 Upper & Lower? Tools, Tips, Close-Up’s & How To Do It Right. | Episode #3

Published on June 30, 2023
Duration: 14:15

This guide details the step-by-step process for assembling an AR-10 upper and lower receiver, drawing on expert instruction from Randy at AT3 Tactical. It covers essential tools, torque specifications for barrel nut installation (65 ft-lbs for Aero Precision M5), and practical tips for managing small parts during lower receiver assembly. The guide highlights AR-10 specific components like the dust cover and notes unique assembly features of the Aero M5 lower receiver.

Quick Summary

Building an AR-10 upper and lower receiver requires specific tools like torque wrenches and an armorer's wrench. Key steps include torquing the barrel nut to 65 ft-lbs for Aero Precision M5 receivers and carefully managing small parts during lower assembly. Attention to AR-10 specific components ensures a successful build.

Chapters

  1. 00:00Introduction to AR-10 Building
  2. 01:20Essential Tool Breakdown
  3. 03:45Upper Receiver Assembly
  4. 06:02Lower Receiver Assembly
  5. 11:17Safety Selector and Takedown Pins

Frequently Asked Questions

What are the essential tools for building an AR-10 upper and lower receiver?

Essential tools include mallets (rubber/brass), various pliers (Knipex, needle-nose), bit sets (Torx, Allen, etc.), inch-pound and foot-pound torque wrenches, an armorer's wrench, and punches. Moly grease is also needed for barrel installation.

What is the correct torque specification for an AR-10 barrel nut?

For an Aero Precision M5 upper/lower receiver, the recommended torque specification for the barrel nut is 65 ft-lbs. Using a torque wrench ensures proper tension for accuracy and reliability.

What are common mistakes to avoid when assembling an AR-10 lower receiver?

Common mistakes include losing small springs and detents; using a small box or tray can prevent this. Also, ensure parts are installed in the correct order, as specified in the build guide.

How does AR-10 assembly differ from AR-15 assembly?

While many principles are similar, AR-10 platforms often have unique components like the dust cover and may have different dimensions for parts like the bolt catch and magazine catch, requiring specific attention during assembly.

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