8 Umarex Legends M1a1 Drum Magazine of 2026 For Reliable Feeding

1

GoldenBall D98 M1A1 Airsoft M1A1 Submachine Airsoft Magazine WW2 Chicago

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  10.0
• Brand
  GoldenBall

Key specs2

Platform Compatibility

Built as a direct OEM fit for airsoft electric guns (AEGs). It does not fit or function in .177 caliber CO2 air rifles.

Magazine Capacity

50 rounds

Pros & cons32

Pros

• Direct OEM fit designed specifically for Airsoft AEG platforms
• 50-round capacity holds more rounds than standard 30-round stick magazines
• Black finish matches WW2 Chicago Typewriter style airsoft replicas

Cons

• Designed for 6mm airsoft AEGs and will not fit or feed .177 steel BB airguns
• Lacks internal CO2 cartridge housing required by blowback BB air rifles

2

Umarex Legends M1A1 Blowback Automatic .177 Caliber BB Gun Air

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  8.8
• Brand
  Umarex

Key specs2

Ammunition Type

.177 caliber steel BBs

Factory Model Matching

• Umarex part number 2251821
• Direct fit for model 2251820 Legends M1A1
• Drop-free loading mechanism

Pros & cons42

Pros

• Official Umarex factory part number 2251821 built for Legends M1A1 model 2251820
• Engineered specifically for .177 caliber steel BB feeding
• Drop-free magazine design allows quick reloads during target shooting
• Houses necessary CO2 power for cycling the blowback action

Cons

• Straight stick configuration rather than the classic drum magazine profile
• 30-round capacity empties quickly during automatic firing bursts

3

HK Heckler & Koch MP5 6mm BB Rifle 200-Round Hi-Cap

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  8.6
• Brand
  Umarex

Key specs2

Magazine Shell Build

Stamped steel with polymer internals

Compatible Airsoft Models

• HK MP5 Competition Kit (2275052)
• HK MP5 SD6 (2275053)
• HK MP5K (2275055)

Pros & cons42

Pros

• Generous 200-round high-capacity reservoir extends shooting time between reloads
• Heavy-duty stamped steel outer shell with high-strength polymer internal parts
• Verified fit across multiple HK MP5 airsoft models including MP5K and SD6
• Easy-to-load setup built for reliable 6mm plastic BB feeding

Cons

• Dedicated strictly to MP5 airsoft rifles and incompatible with M1A1 receivers
• Built for 6mm plastic airsoft BBs rather than .177 steel ammunition

4

GoldenBall D98 M1A1 Airsoft M1A1 Submachine Magazine WW2 Chicago Typewriter

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  8.4
• Brand
  GoldenBall

Key specs2

AEG Fitment

WellFire D98 AEG

Plinking Capacity

50 rounds

Pros & cons32

Pros

• Direct OEM magazine engineered for smooth feeding in the WellFire D98 AEG
• Offers extra capacity over standard 30-round sticks according to listed features
• Finished in black to maintain classic WW2 Chicago Typewriter styling

Cons

• Built strictly for WellFire D98 electric airsoft guns and incompatible with CO2 air rifles
• Listing title specifies 30 rounds while product features state 50 rounds

5

Lancer Tactical D98 M1A1 Airsoft M1A1 Submachine Magazine WW2 Chicago

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  8.2
• Brand
  Lancer Tactical

Key specs2

Receiver Fit

WellFire D98 AEG only

Magazine Style

Stick magazine configuration designed for WellFire D98 electric airsoft submachine guns.

Pros & cons32

Pros

• Direct OEM fit engineered to feed without issue in WellFire D98 airsoft replicas
• 50-round capacity allows longer firing strings between reloads
• Provides spare mag convenience for WW2 Thompson style airsoft skirmishes

Cons

• Listing title specifies 30 rounds while product features state 50 rounds
• Incompatible with Umarex Legends .177 caliber CO2-powered airguns

6

L96 25rd Magazine for Well MB01, MB04, MB05, G22 and

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  8.0
• Brand
  AirsoftGoGo

Key specs2

Supported Bolt Actions

• Well MB01 (L96)
• Well MB04 and MB05
• Well G21 and G22 series

Housing Material

Heavy-weight metal

Pros & cons33

Pros

• Heavy-weight metal construction provides long-lasting structural durability
• Fits multiple bolt-action airsoft rifles across the Well MB and G series
• Delivers a secure mechanical fit for dedicated L96 sniper platforms

Cons

• Completely incompatible with Thompson or Legends M1A1 submachine gun receivers
• Limited 25-round capacity designed for bolt-action rifles rather than rapid plinking
• Intended strictly for airsoft skirmishes and does not support .177 steel BBs

7

Lancer Tactical x Well D98 M1A1 WW2 SMG Airsoft Drum

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  7.6
• Brand
  Lancer Tactical

Key specs3

Drum Capacity

1000 rounds

Winding Mechanism

Features an easy-to-wind wheel to tension the internal feeding mechanism for high-volume shooting.

Physical Dimensions

Measures 7 inches long by 6.5 inches wide by 2 inches high in a black finish.

Pros & cons42

Pros

• Authentic WW2 drum magazine styling delivers the iconic Chicago Typewriter aesthetic
• Massive 1000-round capacity minimizes the need for frequent reloads
• Integrated winding wheel makes tensioning and feeding fast and straightforward
• Direct OEM design ensures feeding compatibility with WellFire D98 airsoft AEGs

Cons

• Engineered strictly for 6mm airsoft AEGs and will not fit .177 Umarex Legends receivers
• Lacks internal CO2 compartments required to power Legends M1A1 blowback actions

8

GoldenBall X WE Tech Gen2 16 Rounds Singal Stack 1911

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  4.0
• Brand
  GoldenBall

Key specs2

Gas System Design

Features a newly designed gas expansion chamber with metal alloy housing and a high-tension spring.

Pistol Capacity

16 rounds

Pros & cons32

Pros

• Metal alloy construction withstands regular handling and gas pressure
• Newly designed expansion chamber improves gas efficiency during firing
• High-tension internal spring promotes consistent feeding of every round

Cons

• Single-stack 1911 pistol design does not fit any M1A1 submachine gun receiver
• 16-round capacity is limited to handgun target shooting rather than rifle plinking

Last update on 2026-10-11 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

Does Umarex make an official drum magazine for the Legends M1A1 BB rifle?

No, Umarex does not make an official factory drum magazine for the .177 caliber Legends M1A1. The manufacturer only produces the spare 30-shot stick magazine built for the Legends M1A1 rifle (model 2251820). If you encounter a drum magazine advertised for an M1A1, it is designed for 6mm airsoft submachine guns rather than a .177 steel BB airgun.

Will an airsoft D98 drum magazine fit a .177 steel BB rifle?

No, an airsoft drum will not fit or feed in your rifle. Options like the Lancer Tactical x Well D98 1000-round drum magazine are manufactured strictly for 6mm plastic airsoft models. The feed geometry and shell dimensions of a 6mm airsoft drum do not match the receiver or the ammunition requirements of the .177 steel BB Legends M1A1.

What is the correct factory magazine part number for model 2251820?

The correct factory replacement magazine is part number 2251821. This magazine is engineered specifically for the Umarex Legends M1A1 rifle (model 2251820) and functions with .177 caliber steel BBs. The factory unit measures 13 inches tall, 4 inches wide, and 1 inch long, ensuring proper alignment with the blowback action.

Can you convert a 6mm airsoft magazine to shoot .177 steel BBs?

No, you cannot convert an airsoft magazine to work reliably with steel BBs. Aftermarket airsoft magazines, including the GoldenBall D98 and Lancer Tactical D98, are sized for 6mm plastic spheres and lack the internal channels required to hold and feed .177 caliber steel ammunition. Sticking to OEM parts ensures your CO2 BB gun cycles cleanly without jamming.

How many BBs does the Umarex Legends M1A1 magazine hold?

The factory Umarex Legends M1A1 magazine holds 30 rounds. While high-capacity airsoft drum magazines hold up to 1000 rounds, the .177 caliber steel BB platform relies on the standard 30-shot stick layout. Packing several factory spare magazines is the most reliable way to maintain continuous fire during plinking sessions.

How do you verify replacement magazine compatibility before buying?

Check the packaging to confirm both the model number and the caliber match your gun. For the Umarex Legends M1A1 rifle (model 2251820), make sure the listing explicitly cites part number 2251821 and states it is for .177 caliber steel BBs. Verifying those two details protects you from accidentally buying 6mm airsoft parts or gear intended for a different tactical air rifle.