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D&H Industries has spent years building metal AR magazines for the range, the woods, and everything in between, and this .300 Blackout version keeps that same reputation intact. The body is heat-treated aircraft-grade aluminum with a hard-coat anodized black finish and a slick black Teflon coating, so it shrugs off scuffs, moisture, and general abuse. Inside, a 17-7PH stainless spring keeps consistent pressure through the whole 10-round stack, and the proprietary red anti-tilt follower guides rounds up cleanly whether you're running light supersonic loads or heavier subsonics.
The bright red follower isn't just for looks. Since .300 Blackout and 5.56 share the same magazine well, it's easy to grab the wrong mag if they all look identical, and that's a mistake you never want to make with these two cartridges. The red follower plus the laser-engraved caliber marking give you a fast visual check so your Blackout mags stay clearly separate from your 5.56 setup. It's a small detail that saves you real headaches at the bench or in the field.
This is where a dedicated mag earns its keep. The feed lips and internal rib are positioned specifically for .300 BLK, which runs a wide range of bullet weights and profiles from around 110 grain all the way up past 200. Standard 5.56 mags can get finicky with those longer, heavier subsonic loads, but this D&H mag is built to guide the full range up smoothly and cut down on nose-dive and feed hiccups. It'll also feed 5.56 just fine since it's based on a 5.56 parent design, though most folks keep it dedicated to Blackout.
This mag drops right into any standard AR-15, M16, or M4 chambered in .300 AAC Blackout. It's a made-in-USA magazine built to military spec, and it's a smart pick whether you're plinking, hunting hogs and deer, or running a suppressed subsonic setup where reliable feeding really counts.
The .300 Blackout runs a wide range of bullet weights and shapes, and standard 5.56 mags can get unreliable with the longer, heavier subsonic loads. This D&H mag has feed lips and an internal rib positioned specifically for Blackout, which cuts down on feeding issues. Just as important, the red follower and caliber marking help keep your Blackout mags visually separate from your 5.56 mags so you don't mix rounds up.
Yes. It's built off a 5.56 parent magazine design, so it will feed and function 5.56 NATO and .223 in those rifles. That said, most people keep it dedicated to .300 Blackout to avoid any confusion between the two cartridges.
The bright red anti-tilt follower gives you a quick visual cue that this is a .300 Blackout mag, not a 5.56, which matters since both share the same magazine well. It also serves as an ammo-level check when the mag runs empty. The follower is a limited-tilt design that keeps rounds guiding up cleanly for consistent feeding.
It does, and that's where a dedicated Blackout mag really shines. Heavier subsonic loads and slower-cycling suppressed rifles are more sensitive to feeding, and the tuned internal geometry here is made to handle those longer, heavy bullets. It's a solid choice for hunting and suppressed range use alike.
| UPC | 850012639084 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | .300BLK-AL-10-BT-RD-RT |
| Caliber/Gauge | .300 AAC Blackout |
| Capacity | 10-Round |
| Length | 5.5000 |
| Quantity | 1 |
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