Customer Reviews for KWC M40 M&P CO2 NBB Steel BB Pistol

Brand: KWC

Type: BB Pistol
Manufacturer: KWC
Model: M40
Materials: Metal and Polymer
Weight: 515 g (1.1 lb)
Length: 193 mm (7.6 in)
Barrel: 88.9 mm (3.5 in), metal, smoothbore
Power Source: 12g CO2 x 1
Action: Semi-Automatic, double action only
Ammo Type: 4.5mm steel BBs
Ammo Capacity: 19 rounds
FPS: 387

Buy the magazine: KWCKW107

Trigger Pull: A bit on the heavy side in terms of a typical double action only BB shooter. The pull is consistent and predictable but this will not be the fastest action shooter out there, and the heavy trigger may tire your finger when shooting quickly. Accuracy may also be compromised since the trigger will affect a smooth pull.

Build Quality: The M40 is an all plastic build other than the full metal magazine and some internal parts like the inner barrel. With the all metal magazine it feels pretty good in terms of weight, but as soon as you take the hefty metal magazine out it feels virtually weightless. That said, you wont; be shooting the pistol without the magazine in it anyway. Fit and finish look and feel pretty good.

Realism: In terms of size and looks, the KWC M40 BB Pistol is a very good replica of a real steel S&W M&P40 without the licensing. Again, the weight is on the shy side and since it's non-blowback it is lacking many working parts like a moving slide, a functioning takedown lever, or slide catch release. The full size drop out metal magazine and recessed barrel do help make the pistol more believable and I also like that KWC worked the safety into slide catch release to keep it well hidden.


  • 1:1 scale replica of the Smith and Wesson M&P
  • Non-blowback gun lets you get more shots per CO2
  • Integrated 20mm accessory rail
  • Full size drop out metal mag holds up to 19 rounds
  • White dot sights for easy target sighting
  • Discreet safety built into slide catch release
  • Comes with a speedloader and BBs to get you started


  • Fixed slide means no blowback action
  • Unlicensed replica does not have official M&P trademarks

Comments: If you’re looking for a low cost BB replica of the S&W M&P40 and don’t need blowback action, perhaps interested in a little more power and shots per CO2, well then the KWC M40 CO2 NBB BB Pistol may check all the boxes for you. The good news is we have a lot of options now if you’re in the market for a S&W M&P40 replica airgun. You can get the lower cost NBB version I am reviewing here, but if you want to spend a little more you could get the KWC metal slide blowback version which also comes in an airsoft equivalent And if you want all the markings then get the Umarex distributed version complete with S&W licensing.

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Money Value
Jan 11, 2020

Great gun

It's a great gun it's a powerful one it can shot far than 118m
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