Replica Air Guns

Umarex Legends MP40 CO2 Blowback Steel BB Submachine Gun

(8 reviews)4.3
In Stock
$ 289.99

Total: $319.00

Type: BB Gun
Manufacturer: Umarex
Model: Legends MP 40
Material: Mostly metal
Weight: 7.7 lb (3.5 kg)
Barrel: 25.4 mm (10 inches), smoothbore
Power Source: 2 x 12 g CO2
Action: Semi/full-automatic
Ammo Type: 4.5mm steel BBs
Ammo Capacity: 52 rounds
FPS: 465

Trigger Pull: The trigger pull on the Umarex Legends MP CO2 BB Submachine Gun is single action only and even though I have seen it tested at around 10 pounds pull, in person it does not feel that heavy and is actually fairly smooth. You will need to charge the bolt for the first shot just like you would on the real steel MP 40.

Accuracy: Like others have reported, you really need to take your time loading the double stack magazine properly or you can have some feeding issues. I added a little bit of dry lubricant to the magazine feeding track. When I performed the accuracy test from my standard 30 foot position I got a very tight 1 inch group shooting in semi auto. A bit high and to the left, but very close to the center bullseye. When I opened up and went full auto the group did largen. The gun rocks back and forth a little with its internal bolt blowback operation, but the remaining 40 rounds mostly stayed within a 2-3 inch grouping.

Build Quality: The gun is pretty much all metal, other than the stock and pistol grip. Pretty much everything that is black is going to be metal on this airgun. It weighs in at a hefty 7.7 pounds which is only a punt off from the real steel version. Overall the fit and finish is really good, all mechanical parts including the retractible stock work flawlessly.

Realism: The Umarex Legends MP is a 1 to 1 replica of the real steel German-made World War II MP 40 machine gun. It is very authentic looking and has very similar operation. The BB version does have the ability to shoot in semi-auto mode — which the real steel version did not — but this is a good feature for saving on CO2 and BBs. It would have been nice if the bolt could lock all the way back and up, but since the movement is shortened this is not possible. Stil, the Umarex Legends MP CO2 BB Submachine Gun is a really nice replica in almost every way.


  • Mostly all-metal design with good overall weightSemi and full-auto selectability
  • Dual CO2 design for increased shots and less cool down effect
  • High capacity full size drop out metal magazine
  • Great looking replica of the real steel MP 40 in looks, operation and weight
  • Internal bolt blowback will give a little recoil feedback
  • Adjustable rear sight for shooting at different ranges
  • Price point is reasonable for this type of full size, mostly metal rifle



  • Sights are not adjustable for windage
  • Bolt does not go all the way back to the lockout position
  • Some reviewers have noted that a full mag load does not always work well in full auto mode


Comments: When I first got my hand on the Umarex Legends MP CO2 Submachine Gun at this years' SHOT Show, I immediately knew it was going to be a hit. The Umarex Legends MP has a lot going for it... High FPS, semi and full auto, nostalgia of being a war replica, and super great build quality, fit and finish. The question is really who wouldn't want one? Especially being a replica BB rifle, which has to be one of the more limited areas when it comes to airgun replicas. I look forward to shooting this offering from Umarex a little more and sharing my experiences with everyone.

Buy the magazine: UMX2251814

Umarex Legends MP40 CO2 Blowback Steel BB Submachine Gun Manual

Caliber:4.5 mm (.177 cal)4.5 mm (.177 cal)
Action:Semi & Fully AutomaticSemi & Fully Automatic
FPS:400 to 450400 to 450
Ammo Type:Steel BBSteel BB
Total Length:24.5 Inch24.5 Inch
Trigger Action:SingleSingle
Blowback Action:BlowbackBlowback
Rear Sight:AdjustableAdjustable
Front Sight:PostFixed
Primary Material:Full MetalMostly Metal
Magazine Capacity:5252
Barrel Length:25.4 cm (10 inch)25.4 cm (10 inch)

Average Rating
Based on 8 rating(s)

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Aug 18, 2021

Shoots sometimed

Tried everything. Gun only shoots when it behaves. Nice quality gun but I believe magazine should ne updated
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Apr 27, 2021

Hefty well built BB gun!

I have over 30 BB guns. I honestly think this is the best built one out of them all. I have airsoft guns at this quality but rarely do you see such heavy, well built, sturdy BB machine guns. Thompson legends too comes close but this one beats it in my books.
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Apr 20, 2021

Great Value

If you are an MP40 fan and considering it get it, you won't be disappointed.
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Feb 16, 2021

Great Quality

Fires beautifully great action life like weapon.
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Dec 05, 2020

Wanted to love it, but

Gun was beautiful. Super realistic, with metal construction. Looked amazing. Unfortunately I could not get the magazine to feed bb’s properly. Seems the double stack design, for lack of a better term, doesn’t work. The bb’s load in a zig zag pattern in the magazine, then they are choked to a single row when fed into gun. I understand this was to increase magazine capacity, but mine didn’t work. Fire a couple shots, then nothing. I could sometimes make it work, if I held the gun upside down. Change the magazine design and gun would be awesome.
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Oct 26, 2020

Umarex MP40

I received promptly my MP40.. It is a real fun to shoot with... However when I tried Crosman Copperhead bbs, I had problem with the magazin not feeding properly. I use now Umarex stell bbs only and all is o.k. Is it normal? Charles Coache, Mirabel, Quebec
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Aug 22, 2020

German Legends MP 40

Another of my you just don't want to put it down or away beauties. Accurate in semi or fully auto. Vicious, but serious shooters will learn quickly to handle it's rate of fire.
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Aug 03, 2020


I always remember BEN GAZZARA as an American GI, toting an MP40 in the 1969 film: THE BRIDGE AT REMAGEN, with it being his weapon of choice. A friend of mine has a real MP40 that his Dad brought back from WW2 and setting them side by side, shows how remarkable this "COPY" is. The accuracy is quite good considering it's not a target rifle. At 35 feet, I managed a couple of 3" - 4" groups firing in the Single Shot mode and could likely do better with serious concentration, But, as this isn't made for bench rest shooting, just select FULL AUTO and have a whole bunch of FUN!!
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