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

This is a Surefire 100-round extended magazine for AR-15 rifles in .223 Rem/5.56x45mm
Crafted from mil-spec, anodized aluminum with unique, nesting polymer followers and cadmium-coated, low friction followers.
Trusted by the US military for over half a century and favored by top competition shooters, the AR-15 is an ergonomic masterpiece and the most customizable rifle on the planet today. Combined with Surefire’s massive extended magazines, it delivers practically unlimited firepower and rock-solid reliability.
These magazines are designed for use with STANAG 4179-compatible AR-pattern rifles. They’re less bulky than drum magazines (less than two standard magazines clipped together), can be stored loaded for long periods of time, and seated in rifles even with the bolt closed.
Double down on firepower with a few spare 100-round magazines for your AR-15 today!
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