McCollum Machine

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McCollum Machine

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Non-NFA M203 Barrel

37mm Smooth Bore Barrel

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.

Quality

  • Machined from solid 7075 aluminum
  • MIL-SPEC Hard Coat Anodizing
  • Chromium-Plated Stainless Steel Barrel Extensions
  • MIL-SPEC Molded Handguards


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