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Questions & Answers
Customer Reviews
Helpful Positive Review
These magazines give you everything you wished for. Not one failure to feed or locking back issues. I’ve ran over 1000 rounds through my training mags and once again zero issues and after that, I went and bought an additional four more.
1/1 found this helpful
Most Recent Reviews
AWESOME PRODUCT by RobNiro, Verified Owner, July 11, 2026
Great product. The best magazine is have by far. Looks nice and chambers excellently.
Most Recent Reviews
magazines good for stoage by jake, Verified Owner, May 23, 2026
Metal feed lips on magazine, better than Magpul. 300blk is good in 20rnd mags
Most Recent Reviews
Great Mags by Mente, Verified Owner, May 19, 2026
Way better than Pmags, quality and construction keep those rounds ejecting in style down range.
Most Recent Reviews
Preferred Magazine by Clyde, Verified Owner, March 19, 2026
These function flawlessly and look great. My only regret is that there isn’t more aftermarket support for base pads and stuff. I’ll take a Lancer over a pmag every time. Upon comparing the magazine to a 5.56 lancer, I do not see any differences in t...
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Most Recent Reviews
Best mags in my opinion by Jesse, February 18, 2026
I know they are a little more expensive but they fit no matter what you add to your rifle and I have never had a feed issue or worried about keeping mags loaded.
Read All 15 Reviews
Color:
Translucent Smoke
Fabric/Material:
Aluminum, Polymer, Steel
Magazine Body Material:
Polymer, Steel
Gun Make:
AR Platform
Gun Model:
AR-15
Caliber:
.300 AAC Blackout
Magazine Capacity:
20 Round
Quantity:
1
Condition:
New

Code: 7UD-RM-MGZN151-999-000-4280-02-20RD

MPN: 999-000-4280-02

UPC: 738435619473

List: $39.41Save 34%
$25.99

Certain firearm magazines and extensions are subject to maximum capacity restrictions based on state and local laws. Currently, we are unable to sell these products to some locations. For a complete list of these restrictions, please visit our policy page.

By continuing with your purchase, you agree to adhere to all applicable laws and regulations.  

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Lancer Systems L5 Advanced Warfighter AR Rifle, .300 AAC Blackout, 20 Round Rifle Magazine

Specifically engineered for use with heavy subsonic .300 Blackout ammunition (200+ grain), the Lancer L5AWM 300BLK magazine features an updated internal geometry which allows longer heavier cartridges to stack properly, increasing feeding reliability when compared to a traditional .223/5.56 magazine. The outside of the mag body is molded with distinctive .300 Blackout markings and the magazine ships with a contrasting flat dark earth floor plate for easy visual identification.image

Specifications for Lancer Systems L5 Advanced Warfighter AR Rifle, .300 AAC Blackout, 20 Round Rifle Magazine:

Manufacturer: Lancer Systems
Color: Translucent Smoke
Fabric/Material: Aluminum, Steel, Polymer
Magazine Body Material: Steel, Polymer
Gun Make: AR Platform
Gun Model: AR-15
Gun Type: Rifle
Caliber: .300 AAC Blackout
Magazine Capacity: 20 Round
Quantity: 1
Condition: New
Dimensions: 11 x 3 x 6 in
Country of Origin: USA

Package Contents:

  • Lancer Systems L5 Advanced Warfighter AR Rifle, .300 AAC Blackout, 20 Round Rifle Magazine

Lancer Systems L5 Advanced Warfighter AR Rifle, .300 AAC Blackout, 20 Round Rifle Magazine Orderable Models

List of Orderable Models

  • Lancer Systems L5 Advanced Warfighter AR Rifle, .300 AAC Blackout 20 Round Rifle Magazine, Translucent Smoke, 999-000-4280-02-20RD , MPN: 999-000-4280-02 , UPC: 738435619473 , Code: 7UD-RM-MGZN151-999-000-4280-02-20RD
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Last updated 2026-11-02 UTC.