New HWK XL Suppressor-Ready Handguard | Check it out

Magpul PMAG M3 300BLK AR-15 Magazine – 30 Round

Based on 17 reviews

SKU: MAG800-BLK  |  UPC: 840815117223

Out of Stock
Orders will Ship within 1 Business Day
Backed by Magpul Warranty!
TOP ADD-ON'S
Die Free Co Dos Boot +2rd Magazine Extension - 3 Pack - Fits Magpul 10/20/30/40 Gen 3 PMAG

Die Free Co. Dos Boot +2rd Magazine Extension – 3 Pack

$18.00

Purpose-Designed Magazine For Rifles Chambered In 300 Blackout

The Magpul PMAG M3 300BLK is a next-generation 30-round magazine chambered in 300 AAC Blackout for AR15/M4 compatible weapons. Along with an expanded feature set and compatibility, the GEN M3 incorporates new material technology and manufacturing processes for enhanced strength, durability, and reliability to exceed rigorous military performance specifications.

The PMAG 30 AR 300 B GEN M3 is a purpose-designed magazine for rifles chambered in 300 Blackout and since its inception, 300 BLK shooters have had to use a magazine designed for another cartridge, limiting its ultimate performance and compatibility.

A Dedicated 300BLK Magazine

One of the key features of 300 BLK 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 profiles potentially decreasing overall reliability, a dedicated 300 BLK magazine was a logical step for the PMAG line.

The Magpul PMAG M3 300BLK also offers a safer way to feed your 300 BLK rifle. It’s distinct rib design and smoother upper-half texture provide the shooter a distinct visual and tactile difference from any other PMAG to mitigate dangerous cross-loading issues.

Along with optimized 300 Blackout performance, the PMAG M3 300BLK incorporates 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.

Features:

  • Next-generation impact and crush resistant polymer construction
  • Modified dimensions allow for wider compatibility with non-Colt-spec platforms
  • Constant-curve internal geometry for smooth feeding
  • Anti-tilt, self-lubricating follower for increased reliability
  • Long-life USGI-spec stainless steel spring
  • Over-travel insertion stop on the spine
  • Ribbed gripping surface and new aggressive front and rear texture for positive magazine handling
  • Paint pen dot matrix panels on the bottom of the body to allow for identification marking
  • Flared floorplate aids magazine handling and disassembly yet is slim enough for use with many double and triple pouches

Specifications:

  • Caliber: 300 Blackout
  • Capacity: 30
  • Finish: Black
  • Model: PMAG
  • Material: Polymer
  • Model Fit: AR
  • Capacity: 30

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Magpul Warranty Information

If you ever experience an issue with a Magpul product at any time, regardless of where it was purchased, please contact us directly and we’ll do everything reasonable to help you.

To make a return, please take the following steps:

  • BEFORE returning any products, please contact us first to receive an RMA number (Return Merchandise Authorization) and prominently write it on the outside of the package. Packages will not be accepted without an RMA.
  • Include a note with your name, shipping address, phone number and email, RMA number, and reason for the return (including, if applicable, information about the firearm, ammunition, and usage environment for defective returns). Do not send ammunition.
  • Wrap the item with quality padding and place it in the original packaging or in an appropriate box for shipping.
  • A UPS shipping label will be provided in your shipment. If using the original packaging, remove or cover the original shipping label. Tape the preprinted return shipping label to the outside of the box. Drop package at an official or authorized UPS drop-off location.
  • All refunds will be applied to the credit card used for the original purchase. You should allow one to two billing cycles for the refund to appear on your statement.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

4.9 17 reviews
1
0%
2
0%
3
0%
4
6%
5
94%
4.9 17 reviews
1
0%
2
0%
3
0%
4
6%
5
94%
Leave your review
Rating
4.9 17 reviews
1
0%
2
0%
3
0%
4
6%
5
94%

Customers who viewed this item also viewed these products

Magpul PMAG M3 20 Round – .300 BLK – MAG1182 - AT3 Tactical

Magpul PMAG M3 .300BLK AR-15 Magazine – 20 Round

(12)
$14.20
Highly Reliable 20-Round Magazine Designed Specifically for 300 BLK Rifles The Magpul PMAG M3
Duramag AR-15 Stainless Steel Magazine – .223/5.56/300BLK

Duramag .223/5.56/300BLK AR-15 Magazine - Stainless Steel - 30 Round...

(6)
$15.99
Duramag Stainless Steel Magazine Outperforms Standard Aluminum Features 410 series stainless steel construction resists
Magpul PMAG M3 30 Round - .223 / 5.56 NATO - MAG557

Magpul PMAG M3 .223/5.56 NATO AR-15 Magazine - 30 Round

(17)
$14.20
Next Generation 30-Round Magazine Enhanced For Strength And Reliability The Magpul PMAG M3 is
Magpul PMAG M3 30 Round Window - .223 / 5.56 NATO - MAG556

Magpul PMAG M3 w/Window .223/5.56 NATO AR-15 Magazine - 30...

(8)
$17.49
The All-in-One 30-Round Magazine For Absolute Performance The Magpul PMAG M3 Window is a
Magpul TMAG M3 30 Round Translucent OD Green - .223 / 5.56 NATO

Magpul TMAG M3 .223 / 5.56 NATO AR-15 Magazine -...

See Your Rounds in Action with the Magpul TMAG M3 OD Green The TMAG
Magpul Magazine Assist 3-Pack for AR-15 .223/5.56 NATO - MAG001 - BLK

Magpul Magazine Assist 3-Pack for AR-15 .223/5.56 NATO - MAG001

(7)
Improve Your Speed And Control When Changing Magazine! The Magpul Magazine Assist is designed
Magpul PMAG M3 10 Round Magazine .223 / 5.56 NATO Black - MAG559-BLK

Magpul PMAG M3 .223/5.56 NATO AR-15 Magazine - 10 Round

(25)
$14.20
Next Generation PMag With Wide Compatibility On Non-AR Platforms This Magpul PMAG M3 is
Magpul PMAG M3 20 Round Magazine .223 / 5.56 NATO Black - MAG560-BLK

Magpul PMAG M3 .223 / 5.56 NATO AR-15 Magazine -...

(14)
$14.20
100% Tough, Durable and Reliable – Great Addition to Your Build The Magpul PMAG
Magpul PMAG M3 10/30 Round – .223/5.56 – MAG1183 - AT3 Tactical

Magpul PMAG 10/30 M3 .223/5.56 AR-15 Magazine – 10 Round

(5)
$17.05
Full Body 10-Round Magazine To Utilize Training & Gear Compatibility For Restricted Areas The
Magpul PMAG M3 10 Round Magazine .223 / 5.56 NATO Black - MAG559-BLK

3-Pack - Magpul PMAG M3 .223/5.56 NATO AR-15 Magazine -...

(22)
$42.99
Buy in Bulk And Save! This Pack Includes Three (3) M3 10-Round Pmags This
Magpul PMAG M3 10 Round Magazine .223 / 5.56 NATO Black - MAG559-BLK

6-Pack - Magpul PMAG M3 .223 / 5.56 NATO AR-15...

(11)
$84.99
Buy in Bulk And Save! This Pack Includes Six (6) M3 10-Round Pmags This
Magpul PMAG M3 20 Round Magazine .223 / 5.56 NATO Black - MAG560-BLK

3-Pack - Magpul PMAG M3 .223/5.56 AR-15 Magazine - 20...

(10)
$42.99
Buy In Bulk And Save! This Pack Includes Three (3) M3 20-Round Pmags The
Magpul PMAG M3 20 Round Magazine .223 / 5.56 NATO Black - MAG560-BLK

6-Pack - Magpul PMAG M3 .223 / 5.56 NATO AR-15...

(2)
$84.99
Buy In Bulk And Save! This Pack Includes Six (6) M3 20-Round Pmags The
Magpul PMAG M3 30 Round - .223 / 5.56 NATO - MAG557

3-Pack - Magpul PMAG M3 .223 / 5.56 NATO AR-15...

(38)
$40.99
Buy In Bulk And Save! This Pack Includes Three (3) M3 30-Round Pmags The
Magpul PMAG M3 30 Round - .223 / 5.56 NATO - MAG557

6-Pack - Magpul PMAG M3 30 Round Magazine - .223...

(58)
$80.99
Buy In Bulk And Save! This Pack Includes Six (6) M3 30-Round Pmags The

Frequently purchased together

Flash Hider with Crush Washer

AT3™ .300 Blackout/.308 WIN Combat Flash Hider with Crush Washer

(1)
$32.99
.30 Caliber Flash Hider for AR-15 and AR-10 A great flash hider for your

UTG Pro AR-15 Ops Ready S4 Mil-Spec Stock Kit -...

(20)
$59.97
Compact AR-15 Stock Kit for CQB and PDWs The two-piece S4 stock comes with

Breek Arms WARHAMMER Mod 2 Ambidextrous AR-15 Charging Handle

(254)
$49.95
Ultra-Slick, Ultra-Affordable Ambidextrous AR15 Charging Handle If you’re looking for a charging handle upgrade
Magpul PMAG M3 20 Round – .300 BLK – MAG1182 - AT3 Tactical

Magpul PMAG M3 .300BLK AR-15 Magazine – 20 Round

(12)
$14.20
Highly Reliable 20-Round Magazine Designed Specifically for 300 BLK Rifles The Magpul PMAG M3
Lancer L5 Advanced Warfighter 30 Round .300 BLK AR-15 Magazine - AT3 Tactical

Lancer L5 Advanced Warfighter .300 BLK AR-15 Magazine - 30...

(6)
$19.99
.300 Blackout Polymer and Steel Hybrid Magazine Lancer’s .300 Blackout specific L5AWM magazine features

Strike Industries Ultimate AR-15 Dust Cover

(3)
$14.95
Strike Industries Ultimate AR-15 Dust Cover: Next-Gen Protection Elevate your AR-15 with the Strike
Magpul M LOK Hand Stop Kit – MAG608

Magpul Hand Stop Kit – M-LOK - 4 Colors Available

(47)
$24.99
Low-Profile M-LOK Slot Index Point For Improved Weapon Control The Magpul M LOK Hand

AT3 Tactical Standard GI AR-15 Charging Handle - 9 Colors...

(52)
$18.99
Classic Mil-Spec Charging Handle – Light and Strong – A Great Value Easily chamber
AT3™ Mil Spec Buffer Tube Kit For AR-15

AT3™ Mil Spec Buffer Tube Kit For AR-15 - 9...

(88)
$39.99
The perfect kit for your next build – at a price that can’t be
Magpul Moe Grip for Pistol Grip

Magpul MOE Pistol Grip for AR-15 – MAG415

(105)
$19.99
Unparalleled Feel And Quality – Amazingly Affordable The Magpul Moe Grip is a top-notch
AT3™ Mil-Spec AR-15 Bolt Catch Spring

AT3™ Mil-Spec AR-15 Bolt Catch Spring

(5)
$1.19
Mil-Spec AR-15 Bolt Catch Spring All AT3 Tactical lower receiver parts meet or exceed
Magpul PMAG D-60 60 Round Drum Magazine for AR-15 – .223/5.56 NATO

Magpul PMAG D-60 .223/5.56 NATO AR-15 Drum Magazine - 60...

(5)
$153.44
Upgrade Your Shooting Capacity With The Best AR-15 Drum Magazine On The Market The

Breek Arms BFO Outside Threaded Cage Flash Hider for .300...

(1)
$29.99
.30 Caliber Closed Tine Flash Hider This version of Breek Arms’ closed tine flash
Ballistic Advantage 10.5" 300 Blackout Barrel

Ballistic Advantage Modern Series AR-15 Barrel - 10" - .300...

(4)
$156.75
Ballistic Advantage Modern Series barrels feature precision-machined 4150 CMV steel, durable Nitride coating, and
Duramag Speed AR-15 30 Round Aluminum Magazine - .223/5.56 NATO - Black Follower

Duramag Speed .223/5.56 NATO AR-15 Magazine - Aluminum - 30...

(33)
$12.99
Affordable And Reliable Aluminum Magazine With Unequaled Durability The Duramag Speed 30 Round Aluminum

Questions & Answers

Don't see the answer
you're looking for?

Loading questions...