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AR15 upper receiver and barrel assembly

This video shows how to do a complete upper receiver and barrel assembly with a free float handguard. In this video we give a detailed guide on assembling an AR-15 upper receiver. The process includes steps like assembling the dust cover, forward assist, installing the barrel, gas block, muzzle device, and the handguard. Here's a breakdown of what was covered: 1. *Dust Cover Assembly:* Insert the dust cover rod, securing it with a C-clip to prevent it from slipping out. Install the dust cover housing and guide rod, ensuring it operates with tension from the spring. 2. *Forward Assist:* Insert the forward assist mechanism with its retaining pin, ensuring the spring is correctly loaded. Use a punch pin to seat the forward assist assembly fully into place. 3. *Barrel Installation:* Insert the barrel into the receiver, ensuring it lines up properly without needing to adjust timing. Consider applying anti-seize grease or Loctite on barrel threads to avoid issues during future disassembly. Use a torque wrench to tighten the barrel nut securely. 4. *Gas Block Installation:* Position the low-profile gas block, aligning it with the barrel's dimple. Secure the gas block with set screws and apply Loctite (blue or red, depending on the situation). 5. *Muzzle Device Installation:* Install the muzzle device, ensuring the ports are properly timed for correct orientation. Use timing shims if necessary to adjust the fit before tightening the device. 6. *Handguard Installation:* Slide the free-floating handguard over the barrel nut, ensuring it's properly aligned and tightened evenly to avoid misalignment or damage. This process gives a solid foundation for completing the upper receiver of an AR-15. It's a clear step-by-step approach that includes useful tips for ensuring everything is properly installed and secure.