The Amend2 Mod-A AR-10 magazine (brand part no. 762MODABLK20) is a 20-round SR-25 pattern magazine for large-frame semi-automatic rifles. Amend2 built the Mod-A around a fiberglass-reinforced nylon body that adds stiffness and heat tolerance over their earlier polymer magazines, which matters most in a big-bore AR where feed lip deflection shows up fast. The exterior is worth a mention too: aggressive texture on the front and rear faces, smooth side panels so the magazine slides clear of a plate carrier or chest rig without snagging. It is an everyday working magazine for .308 Win and 7.62×51 NATO rifles, priced like a consumable and built like it is not.

Key Specifications

• Capacity is 20 rounds, the standard full-size load for a large-frame AR without adding excessive length.
• It feeds 7.62x51mm NATO and .308 Winchester, the two interchangeable chamberings most large-frame ARs are built for.
• The magazine follows the SR-25 pattern, which fits the majority of AR-10 style rifles on the market.
• The body is fiberglass-reinforced nylon, stiffer and more heat tolerant than standard polymer.
• The spring is heat-treated stainless steel, resisting both corrosion and the set that costs a magazine its reliability.
• An enhanced feed lip geometry presents rounds more consistently and reduces failures to feed.
• Aggressive front and rear grip texture gives you purchase during a reload with gloves or wet hands.
• The smooth side panels let the magazine clear pouches and plate carriers without catching.
• The finish is black, matching standard rifle furniture and hiding field wear.
• It is made in the USA and backed by a no-questions-asked lifetime warranty.

Frequently Asked Questions

Will this fit my AR-10? If your rifle takes SR-25 or DPMS pattern magazines, yes. That covers most large-frame ARs, though a few proprietary designs use their own magazines.

Can I use .308 Winchester and 7.62×51 NATO interchangeably in it? From the magazine side, yes. Both cartridges share the same external dimensions, so the magazine handles either. Chamber compatibility is a question for your rifle, not the magazine.

How does Mod-A differ from Mod-2? The Mod-A uses a fiberglass-reinforced nylon blend for added stiffness and better temperature resistance, while keeping the same impact resistance as the Mod-2.

Buy the Amend2 Mod-A AR-10 Magazine

Large-frame AR magazines have historically been expensive and inconsistent. Amend2 undercut that on price without cutting the spring or the feed lips, which is why these have become a default range magazine for a lot of .308 shooters. Buy them in quantity. Order from our Lubbock, Texas gun shop for fast direct shipping, and stock up from our full range of AR magazines.