Date: 18/2/2019 6:27

Umarex Legends MP40 CO2 BB Submachine Gun

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Umarex Legends MP40.

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  • Description
  • Specifications
  • Customer reviews
  • Q & A: 51 answered questions
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Umarex Legends MP40 Submachine Gun

  • Distinctive German replica
  • Two firing modes: Full-Auto and Semi-Auto
  • Uses (2) 12-gram CO2 cartridges
  • Blowback
  • 52rd BB magazine (.177 caliber)
  • Full metal with polymer grip
  • Fixed front sight
  • Adjustable rear sight for elevation
  • Folding stock
  • Manual safety

Please Note: While the original Umarex Legends MP40 featured a 60rd magazine, this capacity has been reduced to 52 rounds in new models.

For years the Legends series by Umarex has brought historic firearms to life as airgun replicas for shooting enthusiasts.  

Now Umarex has created their very own German MP40 submachine gun replica.  This .177 caliber BB rifle promises hours of fun with a 52 round magazine and full auto capability!  Powered by two 12 gram CO2 cartridges, simply select full or semi-automatic firing, and mow down tin cans like never before.  

The "real steel" MP40 was first developed in 1940 for German paratroopers and later became the standard submachine gun for the Wehrmacht infantry.  The Legends MP40 is a faithful replica that will transport you back in time the minute you pick it up.  The realism is highlighted by the full metal body and folding shoulder stock. The hooded front sight and adjustable rear sight stay true to the original design and keep your eyes on the prize.

For fans of WWII military arms, this legendary gun can finally be yours! 


Please Note:  Do not use with Smart Shot BBs as it will cause the airgun to jam.  For best results, do not fill more than 40-45 BBs at a time.  Overfilling can cause jams. 

In the manual, it is stated that you will hear a "pop" noise (CO2 release) when dry firing the gun with just CO2 in the magazine. This is not the case, the magazine must be loaded with both CO2 and BBs for the gun to fire properly.

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other products by Umarex

Caliber0.177" (4.5mm)
Max Velocity450 fps
Barrel Length10.0"
Overall Length24.5"
Shot Capacity52
BarrelSmooth bore
Front SightPost
Rear SightAdjustable for elevation
Suggested forPlinking/Fun
MaterialMetal/ABS plastic
Body TypeSubmachine gun
Fixed/adj. powerFixed
Weight7.7 lbs
UpgradesLegends MP40
See manual

other products by Umarex

Average Customer Review

4.5 (120 reviews)

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5.0 5.0

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4.0 4.0

By Red Deer from USA on 2019-02-03
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Things I liked: It is just a barrel of fun. Semi and full auto modes worked great. It is a robust CO2 BB rifle.

Things I would have changed: none

What others should know: Buy tons of CO2 and BB's because once you start shooting it you will not want to stop. Buy extra mags. I thought 2 mags would be enough for this beast but for full enjoyment you will need 6. This will allow the CO2 cylinders in each mag to warm up and be ready for the next 52 rounds.


4.0 4.0

5.0 5.0

4.0 4.0

By James from USA on 2019-02-01
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Things I liked: Build quality and materials are excellent. Historical accuracy is very good. Fun to shoot, especially on semi-auto which extends CO2 life. Accuracy very acceptable for a bb rifle. As a package, theres nothing like it. A must have.

Things I would have changed: Without a do it yourself spring holder, difficult to load I only wish Umarex would put a little more thought into the loading of their full auto Legend series like the MP40 and the C96 - very difficult on both.

What others should know: Quite fussy as to the bbs. Mine kept jamming with copper clads. Use a high quality polished steel to avoid jams.


5.0 5.0

5.0 5.0

5.0 5.0

By William from USA on 2019-01-29
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Things I liked: Far better than I expected. The all metal construction, weight and function make it a thrill to shoot. I've fired a real MP40 and I can say that it is the next best thing.

Things I would have changed: An extra mag would be nice, even if the price was a little more.

What others should know: Run a litley oiled patch down the barrel before firing. The barrel can't help but be a bit dirty, plus it will slide those steel bb's out just a tiny bit fast, not a lot, but any increase is a good increase.


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  • Jeffrey from USA asked:

    What is the maximum amount of time to leave a charged CO2 capsule(s) in the magazine, away from the gun? At what point does it begin to weaken the seals? I also own the Glock 19 , and have been wondering about this for awhile now.

    • Tyler from USA:

      Most manufacturers do not recommend leaving CO2 in the gun at all. I generally go by a 24 hour rule. If I don't plan to shoot the gun again within the next day, the CO2 is removed.

  • Gregory from USA asked:

    RE: Umarex MP40. Is it possible to drift the front sight for windage adjustment?

    • Tyler from USA:


  • Steven from USA asked:

    I recently purchased a Umerex MP-40 from a seller on eBay, when I received it the gune worked fine but the puncture plug leeks real bad. Ive been trying to either find a replacement seal or a replacement plug. I love the gun but the gas is leaking so bad its nit even worth loading it. Any help would be greatly appreciated.

    • Tyler from USA:

      Two options, 1) Give Umarex USA a call and see if that is a replaceable part that they stock and you could purchase. 2) purchase a new magazine Umarex Legends MP40 BB Magazine,...

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Item Description

UX-2251813 [PY-4312-8329]
Umarex Legends MP CO2 BB submachine gun
Caliber0.177" (4.5mm)
Max Velocity450 fps

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