Variations in Early AR-15/M16 Rifle Buttstocks - Armament Research Services (ARES)

Chuck Madurski A surprising—albeit subtle—variety of fixed polymer buttstocks were used on early AR-15/M16-series rifles. There are five basic types, although it does not appear that these ever received unique manufacturer’s designations. Collectors today know them as the Type A through Type E. These stocks were fitted to the Colt Models 601 through 604, and

Variations in Early AR-15/M16 Rifle Buttstocks - Armament Research Services (ARES)

What makes the AR-15 style rifle the weapon of choice for mass shooters? - 60 Minutes - CBS News

Variations in Early AR-15/M16 Rifle Buttstocks - Armament Research

Colt – The Armourers Bench

AR-15, Vietnam War

MAGPUL MILITARY INDUSTRIES MASADA ADAPTIVE COMBAT WEAPON SYSTEM - Small Arms Review

The new 2nd Edition Blue Book of AR-15s & Variations edited by Zachary R. Fjestad & Lisa Beuning is the most up-to-date and complete reference book

2nd Edition Blue Book of Ar-15's & Variations

AR-15, Vietnam War

How And Why The M16 Failed In Vietnam (And Is It Reliable Today?) - Pew Pew Tactical