Description
Amend2 took the classic straight 20-round AR-15 magazine and brought it up to modern standards with the Mod-A. The body is molded from fiberglass-reinforced nylon, which gives it more stiffness and better temperature resistance than a lot of standard polymer mags. That added rigidity matters more than it sounds. It helps keep the feed lips from spreading when mags sit loaded for long stretches or get knocked around, and that translates to more consistent feeding when you need it.
Inside, you get a heat-treated stainless steel spring that resists corrosion and won't take a set, paired with an anti-tilt follower. The feed lips use updated geometry to present rounds cleanly and cut down on failures to feed. It runs 5.56×45 NATO and .223 Remington, and this particular model is also rated for .300 Blackout, so it covers the common AR chamberings in one magazine.
Why the Mod-A Straight 20 Works So Well
The straight 20-round profile is the real draw here. It sits lower than a 30, which makes it a natural fit for shooting prone off a bipod, running a bench, or keeping a tighter loadout on a truck gun or shorter carbine. You get a full bolt catch on the last round and less mag hanging below the rifle to snag on gear or the deck.
Handling and Grip on the Amend2 Mod-A
Amend2 textured the front and rear faces for a solid hold during reloads, wet or dry, while leaving the side panels smooth so the mag slides out of a plate carrier or chest rig without catching. It's a small detail that pays off during fast mag changes under stress.
Made in the U.S.A. and covered by Amend2's no-questions-asked lifetime warranty, the Mod-A is a dependable, no-drama magazine whether you're stacking them for range days or filling out a serious kit.
Key Specifications
- Manufacturer: Amend2
- Model: AR-15 Mod-A
- Manufacturer Part Number: 556MODABLK20
- UPC: 749355071739
- Caliber: .223 Rem / 5.56 NATO / .300 BLK
- Capacity: 20 Rounds
- Body Style: Straight 20-Round
- Material: Fiberglass-Reinforced Nylon
- Spring: Heat-Treated, Non-Corrosive Stainless Steel
- Follower: Anti-Tilt
- Color: Black
- Fit: AR-15 / M4 / M16 Platforms
- Origin: Made in the U.S.A.
- Warranty: Lifetime
What’s Included
- One (1) Amend2 Mod-A AR-15 20-round magazine (Black)
Frequently Asked Questions
What calibers does the Amend2 Mod-A 20-round magazine run?
This Mod-A is built for 5.56×45 NATO and .223 Remington, and this model is also rated for .300 Blackout. That covers the most common AR-15 chamberings in a single magazine. Just match your ammo to your barrel and you're set.
Is the Mod-A a true 20-round magazine or a short 30?
It's a genuine straight 20-round body, not a cut-down 30. The shorter profile keeps the magazine from hanging low under the rifle, which makes it a great pick for prone shooting, bench work, and more compact loadouts.
What is the Mod-A magazine made of and how durable is it?
The body is molded from fiberglass-reinforced nylon, which adds stiffness and better temperature resistance over standard polymer. That rigidity helps resist feed lip spread so loaded mags stay reliable. It's also backed by Amend2's no-questions-asked lifetime warranty.
Will the Amend2 Mod-A work in any standard AR-15?
Yes. It's designed to fit AR-15, M4, and M16 pattern rifles that take standard AR magazines. The anti-tilt follower and heat-treated stainless spring keep feeding consistent and lock the bolt back on the last round.





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