Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
You May Also Like
Best Rated Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI571BLK-30RD
Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI571BLK-30RD
(50)
List: $12.95 $11.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI556BLK-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI556BLK-30RD
(45)
List: $17.95 $16.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI557BLK-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI557BLK-30RD
(29)
List: $14.95 $14.19
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Coyote Tan, 1 Pack, Polymer, MAG557-MCT-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Coyote Tan, 1 Pack, Polymer, MAG557-MCT-30RD
(29)
List: $14.95 $14.19
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 1 Pack, Polymer, MAG560BLK-20RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 1 Pack, Polymer, MAG560BLK-20RD
(21)
List: $14.95 $14.19
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Remington, 40 Round, Black, 1 Pack, Polymer, MGMPI233BLK-40RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Remington, 40 Round, Black, 1 Pack, Polymer, MGMPI233BLK-40RD
(11)
List: $22.95 $20.45 Save Up to 11%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Coyote Tan, 1 Pack, Polymer, MAG556-MCT-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Coyote Tan, 1 Pack, Polymer, MAG556-MCT-30RD
(45)
List: $17.95 $16.95 Save Up to $1.00
Blazin' Deal Strike Industries Rifle Magazine, AR-15, .223 Remington/5.56 NATO, 33 Round, Smoke Gray, 1 Pack, Polymer, SI-AR-MAG-33RD
Strike Industries Rifle Magazine, AR-15, .223 Remington/5.56 NATO, 33 Round, Smoke Gray, 1 Pack, Polymer, SI-AR-MAG-33RD
(10)
List: $17.95 $16.19 Save Up to 10%
Best Rated Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI570BLK-30RD
Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI570BLK-30RD
(12)
List: $15.95 $14.95 Save Up to $1.00
Amend2 Banana Mod-2 Magazine, AR-15/M4/M16, 5.56x45mm NATO/.223 Remington, 30 Round, Yellow, 1 Pack, Polymer, 556BANANA30-30RD
Amend2 Banana Mod-2 Magazine, AR-15/M4/M16, 5.56x45mm NATO/.223 Remington, 30 Round, Yellow, 1 Pack, Polymer, 556BANANA30-30RD
(1)
List: $27.99 $25.99 Save Up to $2.00
Customer Reviews
Helpful Positive Review
Always work by Karl L, Verified Owner, July 13, 2025
Bought these 20 round mags for a couple reasons. First, when shooting bench rest, the 30 round mags hit the bench. The shorter 20 round mag allows for plenty of clearance from the bench or, when shooting prone. Second, 20 round mags allow me to NOT g...
Read More...
1/1 found this helpful
Most Recent Reviews
Great for sighting in by BIGJMO, Verified Owner, February 23, 2026
Being shorter than the 30 rounder, this one gets along better with some of the rests I’ve used at the range. It also lets your barrel cool a little more when shooting prairie dogs than the 30 rounder. Typical high Magpul quality.
Most Recent Reviews
Easy Mag for use at gun range by IrishTom1969, Verified Owner, February 12, 2026
Best mag size to use at range. Just enough rounds to help with sighting in your AR. HIGHLY RECOMMEND!
Most Recent Reviews
Great Mag for going Prone by Robert, Verified Owner, January 7, 2026
Mag Pull Mags are great. Great Mag for going Prone or Bench resting.
Most Recent Reviews
Magpul pmag gen 3 by Smitty1986, Verified Owner, December 17, 2025
Mags came pretty quick within a week... are easy to load no malfunctions and work great... will be buying more for my 5.56 and .300 blackout
Most Recent Reviews
Ring’n more steel by Longshot, Verified Owner, February 7, 2025
20 rounds at a time makes more steel ring. Fit great with the .223 I have.
0/1 found this helpful
Read All 21 Reviews
In Stock
2 Models Available
Included Accessories
All
Search
Click to select this item for your bundle offer!

Buy Together and Save

As low as $74.14
You Save Up to $5.76
OP Bucks$2.03

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.  

Product Info for Magpul Industries PMAG GEN M3 AR-15/M16/M4 .223 Rem/5.56x45mm NATO 20 Round Rifle Magazine

the PMAG 20 AR/M4 GEN M3 is a polymer magazine for AR15/M4 compatible weapons. Similar to the MOE PMAG, the GEN M3 features a long-life USGI-spec stainless steel spring for commonality, a four-way anti-tilt follower, constant-curve internal geometry for reliable feeding, and simple tool-less disassembly for easy cleaning. It also features a redesigned bolt catch notch in the rear of the magazine that provides increased bolt catch clearance, while an over-travel stop on the spine helps ensure the magazine will not over-insert on compatible weapons. Low profile ribs and new, aggressive front and rear texture give positive control of the GEN M3 in all environments, and a paint pen dot matrix has been added to the bottom panel of the body to allow easy marking for identification. The new, easy to disassemble flared floorplate aids extraction and handling of the magazine while providing improved drop protection, but is slightly slimmer than before for better compatibility with tight double and triple magazine pouches.image

Specifications for Magpul Industries PMAG GEN M3 AR-15/M16/M4 .223 Rem/5.56x45mm NATO 20 Round Rifle Magazine:

Manufacturer: Magpul Industries
Color: Black
Fabric/Material: Polymer
Magazine Capacity: 20 Round
Caliber: 5.56x45mm NATO, .223 Remington
Gun Make: AR Platform
Gun Model: AR-15
Quantity: 1 Pack
Condition: New

Features of Magpul Industries PMAG 20 Gen M3, AR-15, .223 Remington, 20 Round Rifle Magazine

  • Next-generation impact and crush resistant polymer construction
  • The anti-tilt, self-lubricating follower ensures a smooth feed and magazine reliability
  • Modified dimensions allow for wider compatibility with non Colt-spec platforms
  • Utilize the paint pen dot matrix to easily identify magazines with different loadouts
  • Flared floorplate aids magazine handling and disassembly, and is slim enough for use with many double and triple pouches
  • Compact 20 round magazine accomodates firing from a prone position
  • Next-generation impact and crush resistant polymer construction
  • Its ribbed gripping surface and aggressive front and rear texture provide positive magazine handling
  • Constant-curve internal geometry, over-travel insertion stop on the spine, and a long-life stainless steel spring ensure smooth feeding

Package Contents:

  • Magpul Industries PMAG GEN M3 AR-15/M16/M4 .223 Rem/5.56x45mm NATO 20 Round Rifle Magazine

Magpul Industries PMAG GEN M3 AR-15/M16/M4 .223 Rem/5.56x45mm NATO 20 Round Rifle Magazine Orderable Models

List of Orderable Models

  • Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 1 Pack, Polymer, MAG560BLK-20RD , MPN: MAG560BLK , UPC: 873750007915 , Code: 55-RM-HDQ-MAG560BLK-20RD
  • Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 3 Pack , MPN: MAG560BLK-KIT1 , Code: 55-RM-HDQ-MAG560BLK-KIT1-20RD

Magpul Industries PMAG GEN M3 AR-15/M16/M4 .223 Rem/5.56x45mm NATO 20 Round Rifle Magazine Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 1 Pack, Polymer, MAG560BLK-20RD , MPN: MAG560BLK-EDEMO , Code: 55-RM-HDQ-MAG560BLK-20RD-EDEMO-OB-B
  • USED, Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 1 Pack, Polymer, MAG560BLK-20RD , MPN: MAG560BLK-EDEMO , Code: 55-RM-HDQ-MAG560BLK-20RD-EDEMO-OT-A
Compare (0)