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The CMMG 5.7 AR Conversion Magazine Gen II is built to handle extended shooting sessions with 32 rounds of 5.7x28mm capacity. If you're running a CMMG 5.7 upper on a standard AR-15 platform, this is the magazine that makes it work.
The Gen II redesign brought real improvements that matter. You get upgraded feed lips that lock into reliable feeding, a textured grip pattern that actually gives you something to hold during reloads, and side engraving that makes it easy to spot your caliber at a glance. The magazine is constructed from durable polymer and comes finished in black.
Compatibility is straightforward. This magazine pairs with CMMG's 5.7x28mm Radial Delayed Blowback uppers and fits any mil-spec AR-15 lower receiver. You get last-round bolt hold-open functionality too, which means you'll know when the mag runs dry. The magazine is lightweight and simple to load and clean, which beats fighting with some of the proprietary designs out there.
Yes. This magazine is designed specifically to fit mil-spec AR-15 lower receivers. Just pair it with a CMMG 5.7x28mm Radial Delayed Blowback upper receiver, and you're good to go. You don't need any special or proprietary lower receiver for the conversion to work.
The Gen II update brought several practical improvements. You get upgraded feed lips for more reliable feeding, a new textured grip pattern that gives you better control during reloads, and side engraving that helps with quick caliber identification. The internal geometry was also refined for better performance.
Yes. This magazine includes last-round bolt hold-open functionality, which means the bolt will lock to the rear when you fire the last round. That makes it easy to see when the magazine is empty and keeps you from short-stroking during reloads.
This magazine is specifically designed for CMMG AR conversion systems. While some other 5.7x28mm platforms exist, compatibility isn't guaranteed. Stick with what it's built for to ensure reliable feeding and function.
Absolutely. The polymer construction makes cleaning straightforward with no special tools required. You can disassemble and reassemble it quickly, which is a major advantage over some other designs that are tedious to maintain.
CMMG recommends using a standard carbine buffer and action spring when running the 5.7×28 conversion. This is the same spring and buffer setup you'd use in a standard 5.56 AR-15, so if you already have the platform, you're covered.
| UPC | 810097507623 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 54AFCC8 |
| Caliber/Gauge | 5.7 x 28 mm |
| Capacity | 32 |
| Color | Black |
| Length | 6.7000 |
| Model | |
| Product Type | Magazine |
| Shipping Weight | 0.35 |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| State Restriction (OR) | NO SALE TO OREGON |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
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