How to I.D. AR 15, M16 & Mil Spec Bolt Carrier Groups
How Metric Bolts are Measured
AR-15 - Forward Assist and What It's For
Bolt grade explained
How does a Machine Gun Work, Full Auto AR15 Explained M4, M16
M16 Full Auto Bolt Carrier Group from RightToBear AR15 Veteran Owned #ar15 #m16 #bcg #556 #223
How to Read a Metric Screw Thread Callout
Quick Tip: The RIGHT Way To Use the Forward Assist
Metric Fastener Grades & Strengths Explained!! (Class 4.6, 8.8, 10.9, & 12.9)
Smyth Busters: M16? M4? What's the M Stand For?
How to Identify Thread Pitch and Size | Tech Tips | Swagelok [2020]
Metric vs Standard, Imperial or SAE - Wrenches, Sockets, Bolt Size Chart + Mechanic Math
How an AR-15 Works
Why does Your Bolt Slam Shut on an AR Platform?
Deal Of The Week: AR15 / M16 Mil-Spec Bolt Carrier Group Assembly .223/5.56
Metric Size Bolt Specification || Bolt Thread Gauge || Metric Bolt || Bolt Thread Culculation
M16 NiB Nitride Bolt Carrier Group AIM Surplus
How Does it Work: Open Bolt vs Closed Bolt Firearms
Bolt Action Rifle Animation
Enhanced AR/M16/M4 Bolts and Bolt Carriers - Part 1