Lancer Systems L5AWM 30-Round Magazine - 300 BLK - Black

Manufactured by Lancer Systems
SKU: 999-000-4280-04
MPN: 999-000-4280-04
Manufactured by Lancer Systems
3 Reviews

Out of Stock

NOTE: Limit 3 per household. Quantities exceeding 3 will not allow checkout.

Magazines considered High Capacity are controlled by the ATF and/or local jurisdictions are not available for purchase/shipment in all areas.



NOTE:These magazines are optimized for subsonic 300BLK ammunition which have a wider and more forward-oriented ogive on the projectile. If you are shooting lightweight supersonic 300BLK ammunition (<150gr), we recommend using a standard .223/5.56 magazine, as the geometry of most supersonic cartridges more closely mimics that of a .223/5.56 cartridge.

From concept through production, Lancer Systems engineer solutions that make a difference. Whether in the hands of service members or commercial customers, their products will provide a definitive advantage. Lancer designs, develops and tests all advanced weapons and components in-house.

The L5AWM Magazine is built with the reliability of steel, durability of polymer, and weight of aluminum. The magazine design includes a one-piece, wrap-around, steel feed lip assembly and an aggressive surface texture to create the ultimate hybrid magazine.

The constant curve internal geometry of the Advanced Warfighter Magazine utilizes an anti-tilt follower for reliable feeding of 300 AAC Blackout ammunition. The body and component materials are corrosion and chemical resistant, passing military chemical testing.

NOTE: The L5AWM is compatible with modern weapon systems, including M4/M16/AR, SCAR16, HK416, ARX160, and SIG MCX.


  • Hardened steel feed lips
  • Impact resistant polymer body
  • Top of magazine catch is steel
  • Non-tilt follower
  • Constant curve internal geometry
  • Stainless steel spring
  • Aggressive texturing on body for positive grip
  • Slim body design
  • Slide on bottom, easy to disassemble
  • Weight: 4.48 oz
  • Made in the U.S.A.
See More


BrandLancer Systems
Caliber Gauge300 Blackout
Magazine Capacity30
PlatformAR-15 Magazines
Weight4.48 Oz

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

3 reviews

  • 4 stars
  • 0 reviews
  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

PMag Killer!

by -

I recently saw a person chamber a 300 Blackout in their 5.56 upper. I didn't even know that could be done. Well it can and it Blew up their receiver. Make sure you don't mix up your ammo. That is the main reason I purchased dedicated 300 Blackout magazines. I also like the Lancers because of the metal feed lips. They are sturdy and run flawlessly.

Great mags designed for .300 Blk

by -

Great magazines. Work much better than standard 5.56 magazines for .300 Blk. Absolutely no feed problems. Will be buying more.

Fantastic magazine!!!

by -

Great magazine! Ran very smooth, and no failures to feed. I was even using 147g FMJ reloads! Stacks up well with my Gen 3 PMAG.