NEW Aero Precision M4E1 Pro Lower, Mod 4 M-LOK Handguard & EZ Install Pivot/TD Pin & Safety Selector
AT3 Tactical Knowledge Source: Beginner's Guides; AR-15 Tips; AR15 Tricks; Guns & Gun Building AR10 AR-10
AR Builders Guide: How to Build an AR-15 Upper Receiver Assembly LONG Version
Homestead TechTalk
Big Time AR Upgrade | BUILD BOX
Gun Talk Media
Selecting the Best Tool for the Job | BUILD BOX Bonus
Gun Talk Media
Talking Gun Builds with Aero Precision
Gun Talk Media