https://stream.echo6.co/videos/watch/d8b808a4-704d-48a9-b0da-f1ecf15e8e47 https://utreon.com/c/forgottenweapons/ http://www.patreon.com/ForgottenWeapons http://www.floatplane.com/channel/ForgottenWeapons Cool Forgotten Weapons merch! http://shop.forgottenweapons.com During the 1970s and 1980s, Colt wanted to sell not just standard M16 rifle and CAR-15 carbines to foreign military customers, but also wanted to supply support weapons. They put together the Model 621, aka M16A1 “HBAR” (Heavy Barreled Assault Rifle - not the same idea and the HBAR target rifles much more commonly seen) as a sort of LMG sister to the M16A1 rifle. It was essentially the exact same idea as the RPK - a support machine gun with parts interchangeability and identical handling to the standard infantry rifle. A small number were made in the 9 million serial number range, but no contracts were ever made to sell them in significant numbers. A few, like this one, eventually came out of Colt and into the civilian collectors’ market. Mon, 13 Apr 2026 20:41:06 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/d8b808a4-704d-48a9-b0da-f1ecf15e8e47 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.