I've been a fan of BCM gear for awhile, best stuff available for the price bracket IMO. They bust hump to keep inventory in stock, ship fast, and the gear they make... AWESOME. Anyhow, everytime I order one of their uppers, they always throw in a bunch of free shwag. Hats, stickers, posters, reading material. Frikin cool. The 16" carbine upper I got in last week had new freebies in the box... two of their "Make-Ready" DVDs. Didn't think much of it at first, figured it's be a 10min teaser, or a half hour of "Here's our stuff, buy our stuff!" Nope! Both DVDs were well over an hour of pretty nice watching. Training techniques/drills, explanations of the pros & cons of the different zeroing methods, a breakdown of the history/evolution of the modern M4 magazines & optics. They sell these vids for $45, and now that I've gotten to watch these two, I'm gonna be ordering more of the series. If you've been at this for awhile, still a really good watch. Good run through the basics, and a ton of cool info! Just try to ignore the Miami Vice-esque theme music, lol. If you're just getting into the AR platform... GET THESE VIDEOS!