Building an 8.6 Blackout AR

Caleb from Brownells walks through building a large frame AR-10 upper receiver chambered in 8.6 Blackout. Often described as the AR-10’s version of 300 Blackout, the 8.6 Blackout is designed for subsonic shooting and excels when suppressed. In this video, Caleb explains the cartridge, details the parts selection including Aero Precision receivers, Faxon barrel, Midwest Industries handguard, Dead Air suppressor setup, and Strike Industries Arca rail, then assembles the upper step by step.

Chapters:
00:00 - Intro to 8.6 Blackout and Cartridge Overview
01:36 - Lower Receiver Setup and Parts Used
02:26 - Aero Precision Upper and Handguard Selection
03:34 - Faxon 8.6 Blackout Barrel and Dead Air Muzzle Device
04:28 - Suppressor Choice and Charging Handle
05:10 - Strike Industries Arca Rail for Tripod Mounting
06:08 - Barrel Installation and Barrel Nut Torque
08:03 - Gas Block and Gas Tube Installation
09:33 - Handguard Fit and Alignment
13:16 - Muzzle Device Timing with Shims
17:12 - Optic Installation (Sig Tango MSR)
18:09 - Suppressor Fitment and Mounting System
19:35 - Installing Arca Rail on Handguard
24:12 - Charging Handle and BCG Lubrication
25:14 - Upper and Lower Assembly
26:07 - Suppressor Reinstall and Final Build Look
26:48 - Next Steps: Handloading 8.6 Blackout and Range Test