Colt 16" unthreaded 9mm barrel - which model?

[TY44934]

I have two Colt brand 16" 9mm barrels that are not threaded.

Despite searching, I could not find any model Colt 9mm carbine that used such barrels - although obviously there was such a beast produced during the dark days of the national AWB.

Which model Colt 9mm were these barrel for?

[RealFastV6]

Match Target 6430. Lightweight Post-Ban 9mm Carbine.

It was pretty short lived.

http://www.gunsinternational.com/Colt-AR15-Post-Ban.cfm?gun_id=100066698&CFID=168692&CFTOKEN=83950779

[TY44934]

Excellent info RealFastV6! Model AND a photo to boot. Thanks very much.