Got a Dytac civilian profile aluminium outer barrel to use under my URX3.1 (where it cannot be seen) 😉
It’s very light and the finish is good. Definitely on a par with the mil one I have, though not as interesting looking by dint of being more uniform in diameter. No markings.
Again, it has a grub screw instead of a knock pin, so that’s going to have to be modded, but not by me…
My rational for begrudgingly switching from steel OEM outers to aluminium Dytac outers is here.
Flash hider thread is anti-clockwise, to suit the majority of Airsoft flash hiders.
The Reptile House 