Surplus 11.5 Colt 733 / 933 Commando Pencil Barrel Assembly (C MP CB Stamped)

Colt 733 / 933 Commando LWT barrel assy. (0.625 FSB).
Marked: C MP CB

1/7 chrome-lined. "F" Marked Front Sight Base. (For flat-top upper receivers).
The barrel extension has M4 feedramps.

Comes as pictured with sling swivel factory riveted barrel nut gas tube.