Was there ever a Colt CAR-15 open bolt design?

[sheepherder]

Originally Posted by alanint

The M607 should have a 10" barrel and the first issue sound moderator with no flash hider, but pretty close!

All my faux protos exhibit 'artistic license', to suit my taste...

The XM607 fake has a 16" barrel; the 'moderator' is a 1" round steel bar drilled & tapped 1/2" x 28tpi...It does nothing...(The barrel screws into the 'moderator' for its full length)...

I'm currently modifying 'bubba-ized' Enfield No 4 and No 1 rifles into faux 'Jungle Carbines'...Just because I can...