Surefire AR-15 .223/5.56 100-Round Magazine


Surefire AR-15 .223/5.56 100-Round Magazine


SKU: MAG5-100

AVAILABILITY: out of stock

  • Compatible with all weapons that accept standard STANAG 4179 compliant magazines

  • Reliable functioning due to mechanical simplicity and high-quality non-binding coil spring—no lubricants required

  • Long-lasting springs are cadmium coated for low friction and excellent corrosion resistance

  • Easily seated in weapon with bolt forward

  • May be kept fully loaded for extended periods without spring fatigue
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 The SureFire High-Capacity Magazine is compatible with all Mil Spec AR-15 variants and other firearms that function with standard AR-15 pattern magazines. Constructed entirely from Mil-Spec aluminum and then Type III hard coat anodized for durability. Surefire magazines feed smoothly and reliably were designed to be left loaded indefinitely. Additionally, Surefire Magazines can be disassembled for cleaning via the removable floorplate. Also, unlike other high capacity magazines, the Surefire High-Capacity Magazines DO NOT require dry lubricants for reliability.

Due to their unique 4x2 quad stack configuration, the magazines add firepower without excessive bulk. The 100-round magazine is only an inch and a half longer than a standard 30 round magazine and narrower than two 30-round magazines clipped together.

Surefire High-Capacity Magazines can be seated in a rifle with a closed bolt, even when fully loaded-no downloading required. Surefire ensured this by allowing for differing tolerances between SAAMI and NATO specifications.

Technical Information:

SureFire MAG5-100 HCM Specs:

  • Caliber: 5.56 NATO/.223 Remington
  • Capacity: 100 Rounds
  • Height: 12.2"
  • Width: 1.66"
  • Weight-Empty: 9.6 ounces
  • Weight-Fully Loaded: 3.3 lbs
  • Box Material: 6000 Series Aluminum
  • Follower Material: Nylon
  • Construction: Spot Welded
  • Finish/Color: MIL-L-46010 (Grey)

For comparison purposes, USGI 30-Round magazine specs provided below.

MILSPEC USGI 30-Round Magazine Specs:

  • Caliber: 5.56 NATO/.223 Remington
  • Height: 7.1”
  • Width: 0.88”
  • Weight-Empty: 3.9 ounces
  • Weight-Fully Loaded: 1.06lb/16.9 oz

11 customer reviews

Average rating
(based on 11 reviews)
  1. once received

    By 1st Cav October 22, 2016

    Surefire MAG5-100 AR15/M4 5.56mm 100rd Magazines

  2. Not functioning

    By BERD July 31, 2016

    ive heard nothing but good things from surefire but just bought my mag and took it out to shoot, the mag gets stuck internally and doesn't feed properly. very disappointed since my $10 pmags run flawlessly. I'm sure surefire will take care of the problem but not what I expected from a $120 mag.

  3. Awesome value!

    By Ars&chevrolets July 30, 2016

    Feeds flawless, built tough. Couldn't be happier! Fast shipping

  4. Will be buying another

    By Xavier June 27, 2016

    100rds at the ready!!!

  5. Perfect.

    By Michael April 16, 2016

    Fired with both a standard and slide fire without a single malfunction. It empties with the slide fire in less than 20 seconds. A really great test.

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