Walter Perrine’s Pirahha Pistol

    Earlier this year American Handgunner ran a story about Walter Perrine’s interesting Pirahha Pistol. The pistol’s operating mechanism (Patent #3861274. Issued Jan 2, 1975) bears a striking resemblance to the KRISS Vector submachine gun/carbine. The blowback-operated bolt is connected by a linkage to a mass that actuates downward in the pistol grip, deflecting some of the recoil in a downward direction. The KRISS has a similar system although the bolt is connected to a mass that sits forward of the pistol grip, rather than in it.

    According to American Handgunner, between 1969 and 1975 just 23 Pirahha pistols were producued.

    [ Many thanks to Rufus for emailing me the info. ]

    Steve Johnson

    I founded TFB in 2007 and over 10 years worked tirelessly, with the help of my team, to build it up into the largest gun blog online. I retired as Editor in Chief in 2017. During my decade at TFB I was fortunate to work with the most amazing talented writers and genuinely good people!