• 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
        • Viking-Bags Logo 2Pic of the Day, Viking Motorcycle Bags 45L Tactical XL Bag
        • 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
    • Close
  • Men’s Lifestyle
      • Fitness
      • EDC
      • Eyewear
      • Watches
      • Electronics & Technology
      • Downtime
      • Mens Clothing & Accessories
      • Manly Skills
      • Style & Grooming
      • Gentleman Drinks
      • Crate Club
        • Neoron Energy DrinkNeoron Brain Booster Review: A Clean Hit of Focus
        • Viking-Bags Logo 2Pic of the Day, Viking Motorcycle Bags 45L Tactical XL Bag
        • 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
    • Close
  • News
  • Video Demo
  • Buying Guides
  • Shop
  • Advertise
Firearms Accessories

Mean Arms EndoMag: Convert Your AR Lower to 9mm With This Magazine Insert

July 14, 2018 by The Arms Guide Guest Writer Leave a Comment

Mean Arms EndoMag: Convert Your AR Lower to 9mm With This Magazine Insert

The Mean Arms EndoMag makes a big claim. They say their magazine insert converts your Gen 2 or Gen 3 5.56/.223 PMAG® housing into a 9mm magazine to use with a standard AR lower and 9mm upper. They have videos that show this gizmo working flawlessly, even on full auto. I am guardedly optimistic, this looks like it works and it will make training with 9mm much easier, no more dedicated lowers. They work with Glock or Colt variant 9mm Bolt Carrier Groups. Pre-order discounted price will be $24.99 each or a 3-pack for $68.99.

Features the Mean Arms 9mm Magazine Adapter:

  • Quickly and easily change calibers from .223/5.56 to a caliber associated with the caliber converter in a Magpul 30-round 5.56×45 PMAGsⓇ (Gen 2 and 3)
  • Functions as a magazine!
  • No magwell adapter needed!
  • Keep your standard 5.56 Multi Caliber lower receiver!
  • Comes fully assembled.
  • No tools required.
  • Keep all your PMAGsⓇ in use, no need to buy additional or specific 9mm magazines.
  • Keep your muscle-memory reload-training the same between calibers! Same magazine, same draw, same feel.
  • No learning curve when reloading because it is the same magazine you already use!
  • Use most of your PMAGⓇ accessories: i.e. mag pouches, storage racks, decals, caliber indicators, etc.
  • Not a picky eater. Shoots all 9mm munitions. Hollow points included.

https://youtu.be/OWwLduAP8-s

Firearm used in video: Colt AR-15 semi auto 9mm Model AR6951 (with Colt mag well adapter removed to accommodate standard 5.56/.223 PMAG®)

Key Functions

  • No modifications to your 5.56×45 lower!  Changing calibers is now simply a complete 9mm upper for your AR platform. No nuts, no bolts, no drilling, no bull.
  • Last round bolt-hold open feature, just as an AR15 should function.
  • Built-in ejector designed to perform under intense conditions.
  • Convert your 5.56×45 PMAGⓇ to 9mm in seconds, and easily convert back to 5.56 without damaging your PMAGⓇ. No permanent changes to anything!
  • Specially formulated polymer.

THIS IS A PRE-ORDER PRODUCT AND CONTAINS SPECIAL PRE-ORDER PRICING.  DO NOT ORDER IF YOU ARE EXPECTING THIS TO BE SHIPPED SOON!  If you pre-order, you will be one of the first to receive the EndoMag.  Pre-orders projected to have deliveries sometime late summer.

You can pre-order your very own Mean Arms Endomage HERE

ENDOMAG Package Selection

One mag $24.99

Three mags $68.99

Photo courtesy of  meanarms.com

Share This

More From The Loadout Room

Comments

Primary Sidebar

Most Read

  • Vakarian Plate Carrier Review: Elite Comfort and Modularity for Under $300
    Vakarian Plate Carrier Review: Elite Comfort and Modularity for Under $300
  • 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
  • Mossberg 930: the affordable 12 gauge auto-loader
    Mossberg 930: the affordable 12 gauge auto-loader
  • Honoring John Taffin and Mike “Duke” Venturino with Some Big-Bore Magnum Revolver Blastin'
    Honoring John Taffin and Mike “Duke” Venturino with Some Big-Bore Magnum Revolver Blastin'
  • Breek Arms Sledgehammer: The AR-15 Charging Handle That Gas Can’t Touch
    Breek Arms Sledgehammer: The AR-15 Charging Handle That Gas Can’t Touch

Find Us on Facebook

Recent Comments

  • Stepvenlau on UH-1 Holographic Sight by Vortex Optics
  • Stepvenlau on Vortex Spitfire AR Prism Scope with Bullet Drop Compensator (BDC) Dial
  • Stepvenlau on Red Dot Sights on Pistols

Latest From SOFREP

News

Evening Brief: Israel Orders Evacuation of Northern Gaza, Uganda Agrees to Accept US Deportees, US-EU Trade Deal Imposes 15% Tariffs

Entertainment

Words That Make Sense Only If You’ve Worn the Air Force Uniform

Navy

USNS César Chavez to Keep Its Name Amid Pentagon Renaming Push

War Stories

Col. (Ret.) Nate Slate: Young Heroes

Military Content Group

© Copyright 2025 Military Content Group · All Rights Reserved.

  • Privacy Policy
  • Terms of Use
  • Advertisers