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Ordnance Group (Dealer Site)

37mm Launchers, Ammo, and Accessories for Dealers


IMPORTANT NOTE: Thank you for visiting Ordnance Group!  If you are NOT a dealer, please proceed to our retail site:

Tac-m203 37mm Underbarrel Launcher


SKU: m203 12" Category:

Ordnance Group 37mm Launchers are NOT firearms.  Do NOT fire any round meant for a firearm in any 37mm launcher.  Specifically do not use an adapter to fire 12 gauge or centerfire rounds or rimfire rounds.  DO NOT use Beehive rounds.  This launcher is not a firearm and damage to yourself or the launcher is likely if you violate this warning.  Further, you would be in violation of BATF rules.  The Warranty will be void under any of these conditions.  Please review our warranty Legal, Privacy & Return Policy

Tac-m203 has an ambidextrous safety and fully enclosed cartridge head design.  The receiver is one piece for enhanced durability and reliability.  Check out the pictures and order now!

Entirely made in Florida, USA!

The Tac-m203 is a closer re-creation of the venerable M-203. It has a 12" barrel that replicates the look of the classic.  It is single action with a cocking lever on the  side. It boasts a positive trigger block safety. As with all our Launcher products, it is chambered in 37/38 mm and made to the highest standards of American workmanship. Constructed of 6061 aircraft grade aluminum and 4140 hardened steel, it is rugged while maintaining a reasonable weight.

The Tac-m203 mounts on any rifle or carbine fitted with a Picatinny Rail using a 4‚ÄĚ clamp and two bolts that provide the most solid attachment in the industry. ¬†¬†As always, state of the art materials are used throughout, the forward grip is machined as part of the barrel itself. All parts are Type II Coated or Black Oxide treated. We think that you will agree that it is a perfect counterpoint to your AR platform weapon.¬† Note that care should be used if you use the KeyMod or M-Lok mounting system with the Tac-D (or any Underbarrel Launcher from any manufacturer).¬† Neither of these systems are meant to handle heavy recoil.

You can easily convert the Tac-m203 to a stand-alone configuration with the kit that includes a stock adapter, AR adjustable stock, vertical foregrip and wrench.

If you have a stock and just want the stock adapter, that is available too.  Just check the Drop-Downs above.

Key Features:

  • Ambidextrous safety
  • Fully enclosed cartridge head
  • One piece receiver for strength and reliability
  • Improved barrel lock up. ¬†Positive, enclosed push button.
  • Larger, more ergonomic cocking lever.
  • Larger trigger guard to accommodate gloved hands.
  • Unobstructed top so the launcher will lie flat against a full length picatinny rail
  • Beveled lower Picatinny rail.
  • Integral, machined hand guard. ¬†Looks great and increases strength.
  • Stock expansion system looks great and won't break the bank.
  • Reduced weight: 3lbs 1 oz.
  • Can be easily and inexpensively converted to a shoulder mounted configuration.




Sliding Barrel Loading¬†(will accommodate up to 6‚ÄĚ shells without removal of the barrel stop screw.) ¬†

Single Action/Side mounted cocking handle

Sights¬†‚Äď None

Stock¬†‚Äď None Mounts to any weapon with a Picatinny Rail using the ¬†included Picatinny to Picatinny clamp

Barrel Length¬†‚Äď 12‚ÄĚ ¬†

Weight (with clamp)¬†‚Äď 3lb 8oz¬†¬†

Rails¬†‚Äď 12.5‚ÄĚ top, 6‚ÄĚ bottom ¬†¬†

Safety¬†‚Äď Positive trigger block

Aluminum parts treated to MIL-A-8625, Type II, Class 2



The Tac-m203 handles standard 37mm ammunition with the length restriction outlined above. Available ammunition includes flares, smoke and other pyrotechnic rounds for civilian use. If you are a member of law enforcement or the military you can have a variety of ‚ÄúLess Than Lethal‚ÄĚ rounds at your disposal. These include Batons, CS Gas, Wildlife Management (Bird Control) and crowd dispersing Rubber Pellets. The Tac-m203 is ideal for use by SWAT Teams and others with critical tactical requirements.

Description and Features

The Tac-m203 is equipped with a 9‚ÄĚ barrel with a¬†full length upper Picatinny Rail for attachment to your Picatinny Rail¬†equipped weapon. The underside of the barrel¬†has a 3‚ÄĚ rail at the muzzle end for bipod or other accessories. Loading is¬†accomplished by releasing the barrel and sliding it forward to it‚Äôs positive¬†stop. Ammunition up to 6‚ÄĚ long can be easily accommodated; this includes Batons¬†and other Less-Lethal Law Enforcement rounds as well as the OG 26.6mm and 12 ga.¬†adapters.¬† Note that with after-market¬†quad rails, the Tac-m203 can attach to the AK, SKS and any tubular feed shotgun. Click on the images for a larger view. ¬†The standard finish is tactical¬†black. ¬†Orange barrel is available in very limited quantities. ¬†Note that pictures may show accessories not included in price. ¬†Price includes only launcher and Picatinny to Picatinny clamp.

A stock adapter is available to attach an AR style stock to the Tac-m203 (see chart and accessories page for details). 

We think that you will agree that it is a perfect counterpoint to your AR platform weapon.


If you have questions, please call us at 941.592.7227

Additional information


Underbarrel with Clamp, Stand Alone Kit