
We got sick of not being able to use our standard M203 receivers. Even if you went through the trouble of putting a 40mm barrel on it legally... why would you? What will you shoot through it?
This solves that issue.
This is a smooth bore 37mm barrel that is fully compatible with the standard M203 receivers. Just slide the barrel right into the receiver and it is ready to use! These are designed to work with most commercially available 37mm flares and smoke rounds.
Available in 9" and 12" lengths.
Copyright © 2025 McCollum Machine - All Rights Reserved.
We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.