Lancer Systems L5AWM 10-Round AR-15 Magazine - 300 BLK - Smoke

Manufactured by Lancer Systems
SKU: 999-000-4280-03
MPN: 999-000-4280-03
Manufactured by Lancer Systems
6 Reviews

In Stock

Orders of non-FFL items will ship same-day if placed before 3:30pm CST (M-F). FFL orders will ship within 5 business days if transfer details are provided.

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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
  • Round count markers
  • Weight: 2.4 oz
  • Made in the U.S.A.
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BrandLancer Systems
Caliber Gauge300 Blackout
Magazine Capacity10
PlatformAR-15 Magazines
Weight2.4 Oz
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

6 reviews



by -

Very good quality and the shipping was fast as well. Will be doing more shopping with primary arms.

lancer 300blk mag issue

by -

This 10rnd Lancer is difficult to seat [with bolt open] and wont click in place without pushing hard and wiggeling it while inserting. Wont seat at all with bolt closed.

Well worth it

by -

Nice low profile mag. Great spring in it and seems to be holding up well. Have at least 100rounds through it so far. Just wish they had a full black option instead of clear. If you’re questioning it then just buy it! Not to mention I received it within 3 days of ordered.

Great clips

by -

Had issues with feeding in the 300 blackout with these new clips no longer have any issues would recommend to anyone will make more purchases again

Lancer & PA &gt; everything


Ordered a 10 and 20 rd Lancer mag for my 300blk, and PA had them shipped the very next day. Not much else to say besides quick shipping, products arriving as expected and a happy customer.


by -

Very solid magazine 300 blackout rounds fit well in it minor downside I didn’t find those with black base plates and I bought those with fde plates instead.