Primed 300 Blackout Brass


Ready to Load!

SKU: LCX300BLK Categories: , , ,

Primed 300 Blackout Brass

Primed, New Manufacture, Never Fired

Our Primed 300 Blackout brass new manufacture brass and comprised of primarily Lake City, Winchester, and Frontier headstamp**. This brass has never been fired, is FL resized to SAAMI spec, and features a seated and crimped primer.   Orders are bulk packaged in sealed, heavy-duty bags perfect for long-term storage.


  • New primed 300 Blackout Brass*
  • Primer is seated and crimped.
  • Projectile and Powder NOT included.

* Some brass may have 223 Rem headstamps.  This brass is new, never fired, and has been converted to 300 BLK specifications.

Primed Brass Advisements

***Please read below as this product is NON-REFUNDABLE***

- This is NOT Loaded Ammunition.
- Projectile and Powder NOT included.
- May contain other headstamps.**

**  We realize some customers are very particular about the headstamps of the brass they receive.  Some even so particular it takes just 1 piece of non-LC headstamp to send them into a rampage.  We go to great efforts to ensure our products are properly advertised, however, be advised your order "may" contain a small number of other headstamps.  We do not send replacements or issue refunds/credits in these instances.

Arm or Ally is a stocking dealer for all Faxon Firearms, Ballistic Advantage, HOLOSUN, Toolcraft, Elftmann Tactical, Timney, CMC Triggers, HIPERFIRE and named the #1 Overall E-Commerce Dealer for Aero Precision Products in 2020!  See our growing inventory of AR Parts, and Reloading Components.

Weight 1 oz
Dimensions N/A
Brass Type

New Brass


300 Blackout

Component Type


Primer Size

Small Rifle

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