Colt M203 Grenade Launcher

A limited number of Colt M203 40mm receivers were purchased from Colt by Arms Unlimited of Las Vegas, NV. To make these civilian legal, they were provided with 37mm barrels in both 9″ and 12″ barrel configurations.

In addition to the barrels being 37mm, they are different from the traditional 40mm barrels by being smoothbore.

Shown in the photos below is the 9″ barrel configuration.

Shown in this photo is the safety lever flipped to the rear where it rests just before coming in contact with the trigger.
Rear view of the trigger with the safety lever to the rear which places the weapon in ‘safe’ status.
This photo shows the safety in a full-forward position. In this position, the grenade launcher is ready to fire.
Rear view of the trigger with the safety lever forward in ‘ready to fire’ status.
Shown in this photo is the barrel release lever.
Breech face.
Rear of the barrel.
Front of the barrel.
Looking down at the top of the barrel.
Looking down at the barrel from an upward angle.
Threaded receiver for mount screws.