Short answer: the Magpul PMAG 30 Gen M3 is the best all-round AR-15 magazine: polymer, an anti-tilt follower, a stainless spring, and it fits HK416 and SA80 rifles as well as ARs. The PMAG Gen M2 MOE is the budget version for standard ARs. The Lancer L5AWM pairs a polymer body with hardened steel feed lips and weighs 3.8 oz. Daniel Defense makes a 32-round polymer mag, and aluminum GI-style mags are still a cheap, light option.
AR-15 magazines compared
Specs are from Magpul and Lancer, read October 2026; Daniel Defense details are from retailer listings.
Magpul PMAG Gen M3 vs Gen M2 MOE
Both weigh 5 oz and fit any standard AR-15. Magpul says the Gen M3 works with "most 'STANAG 4179' platforms" including the HK416, SCAR 16 and SA80, and has a self-lubricating anti-tilt follower and stainless spring. The Gen M2 MOE is "not compatible with SA80 and HK416, or similar, platforms" but costs less. Windowed versions of both show the round count. See PMAG generations explained for every version.
Lancer L5AWM
Lancer calls the L5AWM Gen 2 a "steel/polymer hybrid": a polymer body with hardened steel feed lips, an anti-tilt follower and a stainless spring, at 3.8 oz. It lists compatibility with the AR-15, SCAR 16 and HK416, and says Gen 2 needs up to 22% less force to insert on a closed bolt. Translucent colors show the round count.
Daniel Defense and aluminum magazines
The Daniel Defense DD magazine holds 32 rounds in a standard-size, carbon-fiber-reinforced polymer body, about 4.6 oz empty per retailer listings. Aluminum GI-style magazines are the original design and are light and cheap; Magpul sells a Ranger Plate floorplate for USGI aluminum magazines if you want a pull tab.
Other calibers and capacity limits
Lancer recommends its standard L5AWM for .300 Blackout under 200 grains and a dedicated 300BLK magazine for heavier subsonic loads; see .300 Blackout BCG and magazines. As of October 2026 some states and cities limit magazine capacity; check your local law before buying 30-round magazines.
AR-15 magazines, with today's prices
Lowest price across the stores we track:
Magpul PMAG 30 AR/M4 Gen M3
Pros
- Fits AR-15, HK416 and SA80, per Magpul
- Anti-tilt follower, stainless spring
Cons
- Dust cover sold separately
Best overall
Magpul PMAG 30 AR/M4 Gen M3 Window
Pros
- Gen M3 with round-count windows
Cons
- Dust cover sold separately
With windows
Magpul PMAG 30 AR/M4 Gen M2 MOE Window
Pros
- Polymer, 5 oz
- Round-count windows
Cons
- Not for HK416 or SA80, per Magpul
Budget pick
Lancer L5AWM Gen 2 30-round magazine
Pros
- Hardened steel feed lips, polymer body
- 3.8 oz
Cons
- Opaque black version has no round-count view
Steel feed lips
Daniel Defense DD 32-round magazine
Pros
- 32 rounds in a standard-size body
- Carbon-fiber-reinforced polymer
Cons
- Specs from retailers, not DD
32 rounds
Brownells aluminum 30-round AR-15 magazine
Pros
- Aluminum GI-style body
- 30 rounds
Cons
- Aluminum can dent
Aluminum
Compare every AR-15 magazine, or plan a rifle in the AR-15 builder.
Frequently asked questions
What is the best AR-15 magazine?
The Magpul PMAG 30 Gen M3 for most people. The Lancer L5AWM is the pick if you want steel feed lips in a polymer mag.
What is the difference between PMAG Gen M2 and Gen M3?
Both fit standard AR-15s. Magpul says the Gen M3 also fits HK416 and SA80 rifles, which the Gen M2 MOE does not.
Are polymer or aluminum magazines better?
Polymer mags such as the PMAG resist dents; aluminum mags are light and cheap. Both work in a standard AR-15.
Do PMAGs fit every AR-15?
Yes, any standard AR-15 or M4. Only the Gen M3 is listed for HK416 and SA80 rifles.
Can I store magazines loaded?
Lancer says its stainless spring lets you store the L5AWM loaded without losing performance.
Are 30-round magazines legal everywhere?
No. Some states and cities limit magazine capacity; check your local law (as of October 2026).
