D&H Industries Ar-15 300 Blk Aluminum Magazine W/ Red Follower 10 Rd
The D&H Industries AR-15 300 Blackout aluminum magazine with red follower is a purpose-built 10-round magazine for shooters running subsonic rifle loads in the 300 BLK cartridge. Whether you're working with a suppressed setup, hunting hogs and deer at close range, or testing loads at the bench, a dedicated 300 Blackout magazine ensures reliable feeding of this unique short-action round. D&H Industries magazines are known for solid construction and dependable performance—they're the kind of gear that works without fuss when you need it to.
The aluminum body keeps weight minimal, and the red follower makes it easy to identify this as a 300 Blackout magazine at a glance—handy when you're juggling multiple uppers and caliber-specific mags on a range day or in the field. The 10-round capacity suits hunters who prefer lighter, more compact loadouts or shooters operating under local magazine restrictions.
If you're building a 300 BLK upper or rounding out your magazine rotation for a modern rifle that already runs 5.56 or 7.62x39, this magazine is straightforward and reliable. Pair it with quality ammo and a properly tuned bolt carrier, and you've got one less variable to worry about.
Key Features
- 10-round capacity optimized for 300 Blackout ammunition
- Aluminum body construction for lightweight durability
- Red follower for quick visual identification and caliber sorting
- Dependable D&H Industries engineering and manufacturing
Specifications
| Brand | D&H Industries | |
| Caliber | 300 Blackout | |
| Platform | AR-15 | |
| Capacity | 10 rounds | |
| Body Material | Aluminum | |
| Follower Color | Red |
Frequently Asked Questions
Will this magazine work with standard AR-15 receivers?
Yes. This is a standard AR-15 platform magazine; it will fit any AR-15 lower receiver. The 10-round capacity and 300 Blackout loading are the key differences—it's designed for subsonic ammunition in that cartridge.
What's the difference between a 300 Blackout magazine and a standard 5.56 magazine?
The 300 Blackout cartridge is shorter and wider than 5.56 NATO. Using a dedicated 300 BLK magazine ensures proper feeding and reliability with subsonic and supersonic loads in that caliber. While some shooters report success with 5.56 mags in 300 BLK, a caliber-specific magazine like this one is the safer choice.
Why is the follower red?
The red follower is a visual aid to help you quickly sort magazines by caliber and load, especially useful if you're running multiple AR uppers at the range or in the field.
Is this a 10, 20, or 30-round magazine?
This specific product is a 10-round magazine. D&H Industries does manufacture 300 Blackout magazines in 20- and 30-round capacities as well, but this listing is for the 10-round version.

