Madbull have sent over some information and a video for their Daniel Defense steel outer barrel:
All Daniel Defense cold hammer forged barrels are made from start to finish in our state-of-the-art facility located in Black Creek, GA.In keeping with our heritage of not cutting corners, all cold hammer forged barrels feature a forged chamber and heavy phosphate exterior coating. They are all MP tested on-site and are available in multiple configurations. These barrels will prove themselves to be more accurate and last longer than a barrel that has cut or button rifling." – Daniel Defense.com
AIRSOFT VERSION: Machined steel
FEATURES:
– Authentic Daniel Defense markings
– Machined steel for realistic weight (heavier than aluminum barrel)
– Phosphate finish, like real steelMORE INFO & PHOTOS: http://madbull.com/ddsteel/
(Madbull)