Peruvian MGP-87: A Grenade Launching Submachine Gun

The 9mm Peruvian MGP-87 is a fascinating weapon. It was developed in the 1980s by the Peruvian military and used by the Navy and local police forces. About 16,000 were produced. It is notable for its ability to launch rifle grenades. The photo above shows the MGP-87 fitted with its grenade launching perforated sleeve and a frag grenade ready to be fired.

South American gun expert Ronaldo Olive wrote an article about the Peruvian MGP-87 for the 1995 Edition of SPECIAL WEAPONS for Military & Police. He was kind enough to let us publish it for you all to read.

The photo below shows a number of variations of the gun …


Many thanks to Ronaldo Olive for the photos and information.

Steve Johnson

Founder and Dictator-In-Chief of TFB. A passionate gun owner, a shooting enthusiast and totally tacti-uncool. Favorite first date location: any gun range. Steve can be contacted here.


  • Good people deserve to own and possess licensed guns to protect themselves from criminals, a rigid background check on gun license applicants with neuro psychiatric evaluations to determine fitness to possess one or several, depending on their need.

    • Nick

      What about the crooks in Gov’t? They never underwent a psych test to hold office but they seem to wield ungodly power, destroy lives in the name of greed and live above the law but the rest of use have to seek permission from a collective in order to have the means to defend ourselves?

      • Ghostalker

        Indeed, the issue stems from the impartiality of the test giver. We could all be considered crazy to someone having a bad day/angry with their job.

        • Zermoid

          If the person giving the “test” is the crazy one, then the sane person will be judged crazy.

    • Burst

      That’s a valid opinion, but what does it possibly have to do with a PERUVIAN SMG?

  • “Good People”? Only God is good.
    Decent people need no “evaluation” from those Quacks, the Drug-pushing, Wich-Doctors known as Psychiatrists, that pretend to be Doctors, but are laughed at by REAL Doctors, and pretend to be Scientists, but are ridiculed by REAL Scientists.

    • McSmugget

      This works for all values of God

    • Michael Pham

      As a doctor (and thus someone with a science background) I would disagree that we all laugh at psychiatry. It has made strides from the quackery of electroshock therapy and lobotomy, and many people do seek therapy from psychiatrists and gain help.

      However it is a pretty poorly understood medical science compared to say, cardiology, and I am greatly perturbed by psychiatry, at this current state of understanding, influencing public policy.

      • FourString

        Some are quacks who abuse their power (only in low income wards), some are caring individuals (particularly in affluent, prestigious university settings)—it’s not an all or nothing affair. Overall, however, psychology (despite being relatively nascent) is a HIGHLY regulated science, with psych research studies double checked by colleagues/adversaries throughout universities worldwide—only morons like Edgar, who probably never went to college, believe that psychology is not a science.

        • Eric S

          Highly regulated is an understatement. Part of the application to do human testing has you justify why your experiment is necessary to the advancement of humanity. That and anyone who has ever tried to prove a hypothesis at the P =.05 level knows how hard it is. But anyway, we really don’t understand much about psych in the grand scheme of things cause it’s still a relatively new science and if we go down the path of restricting people’s rights based on what we know, it’s a very dark rabbit hole.

          • FourString

            Thank you for this. It’s good to see someone here who also knows a thing or two about the social sciences. I agree with you. Restricting rights is a slippery slope, but that’s not just confined to psychologists.

          • Social Sciences! Right. What idiots “study”, when they cannot get a real Degree…

          • FourString

            There are psychology background professors in business schools (Harvard, Stanford, Yale, Berkeley, UCLA, UChicago) making six figure salaries and improving upon industry, as well as scientists conducting brain imaging and genotyping in interdisciplinary projects that cross over with chemistry, neuroscience, biology, urban design, and architecture departments, while Ph.D. graduates in psychology are in demand at tech firms like Google for human interfacing research and development, but sure thing, hoss, you keep telling yourself what a “real degree” is.

          • FourString

            And thank you for referring to IRB proposals. It is a very stringent process to start and modify a research study. Not enough people know this.

      • FourString

        Furthermore, psychiatrists usually, if not always, need to go to medical school to be able to prescribe medication. They are doctors, too, so it is laughable that Edgar Costello is ridiculing psychiatrists, when psychiatrists have technically gone through more schooling/training than a general practitioner. Again, Edgar Costello is a 1000% fucking moron.

        • “1000% fucking moron”

          You Occupy Wall Street moron, hiding under a moron’s name, have you even saw the Video, about those other “morons” the PSYCHIATRY Students that conducted the Thud Experiment?
          Nah, you’re too lazy for that.

          • FourString

            Again, I have no idea how I am in any way, shape, or form affiliated with occupy wall street. You clearly need meds. And a formal education.

  • jokersrighthandman

    ok what do any of these comments have to do with the story at hand? anyways interesting looking gun I would love to shoot one to see if the concept actually works. it would be interesting to see if maybe this gun could have been a contender at some point.

  • Ronaldo Olive

    For the record, I only fired the guns as normal SMGs, not having the chance to use them in the grenade-firing mode. The local guys, however, told me the unusual system worked fine.

  • Zermoid

    Is it me or does it look like a derivative of the German MP 40?

    • FourString

      that was my first thought, too.

    • FourString

      that was my first thought, too

    • Eric S

      I’d say it was closer to a S&W 76 myself.

  • FourString

    This creation looks like the polar opposite of a bullpup (mag so far forward) haha