Using this magazine in a modern “M4 cut” AR-15 upper receiver group will give the bullets three feed ramps leading to the chamber: one set built into the magazine itself, one set built into the upper receiver, and one set built into the barrel extension. The front of the feeding area has a steel insert attached which features twin feeding ramps built into the magazine. Constructed using thick aluminum at the rear, the sides of the feed lips have square reinforcing ribs crimped into their shape. The feed lips are the stoutest I’ve ever seen on an AR-15 magazine, and they’d better be if they are going to keep from spreading apart with the force of those three huge springs pushing 100 rounds against them. Unlike the Beta C which uses plastic “dummy rounds” as followers, the two-column Surefire follower does activate the bolt hold-open device on the AR-15 and similar rifles. At this point, the “two-column follower” rises up out of a hole in the middle of the four-column follower and finishes pushing the last few rounds up to the feed lips. The “four-column follower” is the width of the bottom section of the magazine and stops at the point where the magazine necks down to one double-stack of rounds. An aluminum divider runs up the middle of the body, going through the middle of the springs and separating ammunition into two double stacks. The largest, bottom spring is a super strong circular shaped monster that is the biggest and strongest magazine spring I’ve ever seen. Inside the aluminum body are three springs of different sizes which collapse inside each other like an old-fashioned telescope as the magazine is loaded. Inserted into an AR-15 carbine it looks almost comically enormous compared to a standard capacity 30 rounder. A quadruple stack monster 1.5 inches wide and over a foot long, it still weighs only 3.3 pounds when fully loaded with 100 rounds of 5.56 ammo. I recently got my hands on the MAG5-100, and this thing is a true high-capacity magazine. Surefire just released two new stick magazines to the public, with capacities of 60 and 100 rounds. ![]() The Surefire MAG5-100 is a true high capacity magazine. The Beta C hasn’t caught on with the military due to its need to be lubricated with graphite and fears that its complex design is too fragile for the rigors of combat. Then there is the famous Beta C, a double-drum polymer behemoth holding a full 100 rounds and weighing 4.6 pounds when fully loaded. A few 40-round designs are offered but none has really caught on. For the past three decades, 30-round stick mags have been the norm for AR-15s used domestically and for M16s and M4 carbines used by our boys overseas. The 30 rounder became the standard detachable rifle magazine for all NATO countries in the early 1980s under STANAG 4179. Providing excellent feeding and loading.Hunting with an AR-15 requires a low-capacity magazine of 5 or 10 rounds. Twenty-round magazines were issued to the first soldiers using M16s, and soon after the 30-round magazine was developed to give parity with the AK-47s encountered in the dense jungles of Vietnam. With the only downside being that steel is typically much heavier than todays modern polymer body magazines, or some aluminum body magazines.įeed-Lips: Steel: The feed-lips on this magazine are uniform with the material of the body.Ĭapacity: This magazine has a standard capacity of 30 rounds.įollower: The ASC STANAG mag uses a non binding, high visibility orange follower. This is why they have become the approved supplier for many of the most well-known firearms manufacturers in the nation.Ĭonstruction: Steel: Used in the original USGI M16 magazines, steel is great for the main body of a magazine as it is incredibly durable and impact resistant. ASC magazines are built with the highest quality components to ensure reliable functioning and increased longevity. ![]() Ammunition Storage Components (ASC) builds some of the best magazines available on the market today. ![]() ![]() But higher capacity magazines such as 40 / 50 / 60 / 100 can also be designated as STANAG compliant. STANAG compatible magazines come in standard 20 or 30 round configurations typically. STANAG Magazine are typically constructed from steel or aluminum, allowing for reliable feeding and interoperability of 5.56 NATO. 223 Rem/5.56 NATO AR-15 Magazine 30 Round Magazine, Stainless, Black, Orange FollowerĪbout this Magazine: STANAG Magazines or 'Standardization Agreement' refer to the NATO designation of the original USGI M16 magazines.
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