The PMAG 30 AR 300 B GEN M3 is a purpose-designed magazine for rifles chambered in .300 Blackout.
Since its inception, .300 Blackout shooters have had to use a magazine designed for another cartridge, limiting its performance and compatibility.
One of the nice features of .300 Blackout is the compatibility with 5.56x45mm parts, but with the magazine it is a compromise to do so.
Due to the wide variety of projectile weights and shapes potentially decreasing overall reliability, a dedicated .300 Blackout magazine was a logical step for the PMAG line.
In addition to the performance gained by a dedicated mag, the PMAG 30 AR 300 B also offers a safer way to feed your .300 BLK rifle. When using 5.56 mags, the potential to chamber and fire a .300 BLK round in a 5.56 rifle with catastrophic results requires diligent ammunition management by the shooter.
The PMAG 30 AR 300 B’s distinct rib design provides the shooter a distinct visual and tactile difference from any other PMAG to mitigate dangerous cross-loading issues.
Along with optimized .300 BLK performance, the PMAG 30 AR 300 B brings along all of the GEN M3 features such as our next-generation impact and crush resistant polymer, aggressive front and rear texture, an easily removable slim floor plate, a paint pen dot matrix for marking and identification, and a dust/impact cover.
- Dedicated, purpose-designed magazine for rifles chambered in .300 Blackout
- Optimized internal geometry accommodates the wide variety of bullet profiles used in .300 Blackout cartridges
- Distinct rib design provides the shooter a visual & tactile difference from any other PMAGs to mitigate dangerous cross-loading
- Carries forward the physical & performance features of the rest of the Gen M3 line
Big Book Catalog, Issue:71, Page:067
In the fields, at the range or on the hunt, you can trust TulaAmmo to deliver a superior level of internal, external, and terminal ballistics, more consistent velocities and impressive retained energies downrange from your favorite rifle, with an unmatched value-to-performance ratio. All TulaAmmo rifle cartridges are steel cased, non-corrosive Berdan primed, with a phosphate coating and a lead core.
Shooting Accuracy- more uniform and consistent jacket delivers up to 15% better shooting accuracy than standard bimetal bullets.
Corrosion Resistance- Zinc washed cases doesn't change in appearance over time and is proven to inhibit electrochemical corrosion of the steel case.
You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition. All ammunition must be shipped Domestic Ground. Shipping not available for International residents. Residents in CA, DC, DE, IL, MA, NY, CT, NJ and OH may have additional restrictions. Always make sure you use the correct ammunition for your firearms. Check your state and local laws for any other applicable firearms and ammunition regulations. Due to Department of Transportation regulations, we cannot accept returns on ammo. Please check local laws before ordering. View full restrictions here.
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Brownells is still shipping ammunition orders to California but the process has changed to comply with California Proposition 63. We must now ship ammunition purchased online to an FFL or California-approved ammunition dealer. After placing your order, a Brownells representative will contact you to ensure your ammunition arrives quickly and in compliance with the law.