• Skip to main content
  • Skip to primary sidebar
The Loadout Room

The Loadout Room

Professional Gear Reviews

Hardcore Gear and Adventure

Menu
  • Shooting
        • Pistol
        • Pistol Accessories
        • Rifle
        • Rifle Accessories
        • Shotgun
        • Machine Guns
        • Air Guns
        • Ammunition
        • Optics and Sights
        • Weapon Lights
        • Tips & How-To
        • Concealed Carry
        • Holsters
        • Suppressors
        • Precision Rifle Shooting
        • Firearms Training
        • m243The M24: America’s Headhunter
        • skorpFull-Auto Fun — Shooting the full-Auto vz. 61 Škorpion
        • p320-full-leftSIG Sauer M17/M18/P320 Pistol Just Can’t Seem to Escape Safety Controversies
        • TISAS_10100520_1__98179Tisas 1911A1 U.S. Army Review: Best Budget .45 ACP WW2 1911 Clone?
    • Close
  • Gear Reviews
      • Mission Gear
      • Camping Gear
      • Survival Gear
      • Medical Gear
      • Adventure & Travel
      • Knives & Tools
      • Overland
      • Disaster Preparedness
      • Footwear
      • Womens Gear & Clothing
        • Hunting in TexasThese 5 ATV Dealers Will Get You Ready For Hunting Season in Texas
        • ac65a540-2ef3-4598-8d11-afdf53f46e94.__CR0,0,970,600_PT0_SX970_V1___Streamlight ProTac Rail Mount HL-X: A Thoroughly Bright Review
        • Bluetti 2 handsfree power backpackBluetti Handsfree 2 Review: The Ultimate Power Backpack for Off-Grid Adventurers
        • The Gallagator 10 day pack on the shoreline next to a hiking trail.Day Pack – Mystery Ranch Gallagator 10 – The Best Yet?
    • Close
  • Men’s Lifestyle
      • Fitness
      • EDC
      • Eyewear
      • Watches
      • Electronics & Technology
      • Downtime
      • Mens Clothing & Accessories
      • Manly Skills
      • Style & Grooming
      • Gentleman Drinks
      • Crate Club
        • Tom and Blake Sell TeaHow Sasquatch Tea Is Revitalizing a Stagnant Tea Market With Veterans and Outdoorsmen in Mind
        • redcat-blackwidow-articleheaderWar of Words: In the Ultra-Competitive Defense Tech Industry, Storytelling is a Secret Weapon
        • Photoroom_20250525_074933Juggernaut Tactical Frame Review: The Best Upgrade for Your 365
        • craft holstersCraft Holsters Makarov Tuckable IWB Holster Report
    • Close
  • News
  • Video Demo
  • Buying Guides
  • Shop
  • Advertise

Weird Gun Wednesday: The JO.LO.AR.

Weird Gun Wednesday: The JO.LO.AR.

The JO.LO.AR. pistol, like car phones or the portable record player, fits the profile of an invention that seemed a whole lot more clever on paper than it was in actuality. That doesn’t change how undeniably weird and cool-looking it is.

Where you’ve seen it:

Odds are good you haven’t.

History:

Back in 1919, a Spanish gun dealer named Jose Lopez Arnaiz (see what he did there? JO.LO.AR.) came up with the best solution ever for a problem that never really existed. He believed his invention—a steel lever screwed into the slide of a semi-automatic pistol—would turn a conventional handgun into a dexterous weapon capable of effortless one-handed operation. In simpler terms, armed with a pistol of his design, you could rack the slide—chambering the first round if you were carrying without one in the tube—using only the pointer and middle fingers of your shooting hand. Living during a time when horse-mounted cavalry still seemed a viable force on the battlefield (one could assume they rode with one hand on the reins, the other on their sidearm), Arnaiz was certain his invention would succeed commercially. After securing a patent, Arnaiz sought out a deal with Hijo de Calixto Arrizabalaga, a Spanish gunmaker. The management at Arrizabalaga liked the idea of the JO.LO.AR., but were in no mood for taking a huge risk on it. Their ‘Sharp Shooter’ line of blowback-operated pistols had a history of poor sales, making it the perfect candidate for an experimental improvement.


Weird Gun Wednesday: The JO.LO.AR.Design

After the addition of an extractor, the removal of the weapon’s trigger guard, and the addition of Arnaiz’s Palanca (lever), the newly recast JO.LO.AR. was ready. Now there are a couple of things I took issue with when I first handled this gun: First, I questioned how black and blue my knuckles would be after shooting this piece with that lever hanging down. Fortunately, the gun’s recoil swings the lever out of the way of the hand during firing, and the mechanism does work as advertised to charge the pistol (even if it takes the finger strength of of a concert pianist to tug it back). Second is what I believe to be the reason Arnaiz’s idea never took off: The weapon comes equipped with a tip-up barrel as seen on the modern Beretta 86—a handy addition for the individual who wants to drop a round in the chamber without the need to rack the slide. In this configuration, all you’d need to do is thumb the hammer back and the gun’s ready—almost certainly easier than using the JO.LO.AR.’s stiff cocking lever. Unless you’re hell bent on carrying this gun in condition 3 (Chamber empty, full magazine in place, hammer down), there’s really no practical reason for Arnaiz’s invention.

The Cartridge:

Though the JO.LO.AR. was produced in five different calibers (.25 ACP, .32 ACP, .380 ACP, 9mm Largo, and .45 ACP), the most common examples were chambered to the 9mm Largo—not to be confused with conventional 9mm (9×19 Parabellum) or the .38 Super (which fits in the chamber and, if fired, may turn a scarce pistol into an M-80 firecracker).

The verdict?

Arnaiz would have done better to have sold his patent when there was an inkling of interest in it rather than refusing to sell or license his beloved invention. Instead, during the entire course of production, Arrizabalaga had to deliver the JO.LO.AR.s to Arnaiz, who would install his invention on them before sending them on to the purchaser. This worked for a short while before the two parties experienced a falling out. Though still convinced of the value of his invention, Arnaiz never found another manufacturer to produce pistols for him. In total, fewer than 30,000 JO.LO.AR.s made it into the world market—most ending up in the holsters of the Portuguese or Peruvian mounted police. That said, the JO.LO.AR. is an enormously fun gun to shoot, always gets attention at the range, and will surely go down in the annals of history as one of the oddest handguns to surface in the early 20th century.

Share This

More From The Loadout Room

Comments

Primary Sidebar

Most Read

  • Mossberg 930: the affordable 12 gauge auto-loader
    Mossberg 930: the affordable 12 gauge auto-loader
  • The Biggest Little Roundgun: The 3-Inch Kimber K6s
    The Biggest Little Roundgun: The 3-Inch Kimber K6s
  • Mossberg Shockwave Versus Remington Tac 14
    Mossberg Shockwave Versus Remington Tac 14
  • Pyramyd AIR’s Springfield Hellcat Pro CO2 BB Pistol Is the Ultimate Dry-Fire Trainer
    Pyramyd AIR’s Springfield Hellcat Pro CO2 BB Pistol Is the Ultimate Dry-Fire Trainer
  • Smith and Wesson Governor Range Review
    Smith and Wesson Governor Range Review

Find Us on Facebook

Recent Comments

  • Leland on Streamlight ProTac Rail Mount HL-X: A Thoroughly Bright Review
  • Winston Smiths on Mossberg 930: the affordable 12 gauge auto-loader
  • Jared Mize on The Fairbairn-Sykes Fighting Knife: A Commando Blade That Changed Special Forces Forever

Latest From SOFREP

News

Evening Brief: Hollywood Driver Slams Into Crowd, Americans Freed From Venezuela

Military

Russia’s War of Exhaustion: Bleeding Ukraine by Design

SOF

US Army Special Operations Command Issues “Duty To Warn” Notification Regarding Possible Terrorist Threat

Editorial Cartoon

Justice: Delayed, Denied or Redacted?

Military Content Group

© Copyright 2025 Military Content Group · All Rights Reserved.

  • Privacy Policy
  • Terms of Use
  • Advertisers
 

Loading Comments...