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PY-2458-4930

Smith & Wesson M&P 45 CO2 Pistol

Main Product Rating 4.54.5 (64 reviews) Review, article, latest buzz
Smith & Wesson M&P 45 CO2 Pistol

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  • FeatureIcon
    WARNING WARNING This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

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See manual
The S&W M&P (military & police) air pistol is a dead-ringer for the firearm handgun made by Smith & Wesson. If you like to use airguns to gain or retain proficiency for your firearms, this will help you do that. While the firearm will have more recoil, you'll still be able to get the feel of the gun, the weight, the handling characteristics...and more from shooting the air pistol version.

Shoot either steel BBs or lead pellets through this CO2 gun.


  • Smith & Wesson M&P 45
  • CO2-powered
  • Semiauto
  • 8-shot rotary pellet clip & 8-shot rotary BB clip
  • Shoots pellets or steel BBs
  • Double- and single-action*
  • Fixed front sight
  • Rear sight adjustable for windage
  • Integral accessory rail
  • Synthetic frame
  • Textured grip
  • Manual safety

*You can pull back the rear part of the slide to shoot the gun single-action, however Umarex lists this gun as double-action only.

The manufacturer states that the M&P 45's velocity is 370 fps. A recent velocity test showed that BBs delivered 360 fps and pellets 350 fps.

The owner's manual says the gun is 7.10" long. That's a typo. It's really 8.10" long.

See other products by Umarex > Smith & Wesson

See manual

Smith & Wesson M&P 45 Specs

Max Velocity370 fps
Overall Length8.1"
FunctionRepeater
Weight1.35 lbs
ScopeableNo
SafetyManual
Suggested forPlinking/Fun
Caliber.177 (4.5mm)
Loudness4-Medium-High
Barrel Length3.3"
Shot Capacity8
BarrelRifled
Front SightBlade & Ramp
Rear SightAdjustable for windage
ActionSemiautomatic
PowerplantCO2
Trigger ActionDouble-Action & Single-Action
Ammunition5.1gr
Body TypePistol

Smith & Wesson M&P 45 Reviews

Rating 4.54.5 (64 reviews)
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Rating 5.05.0 5.0

Rating 5.05.0 5.0

Rating 5.05.0 5.0

Verified Purchase

Things I liked:

Everything. I wish Umarex would make more pistol replicas that utilize that reliable 8 shot clip. Solid polymer slide/frame, metal internals, metal 'slide' release/safety/trigger. Not quite a tack driver at 10 yards but pretty close, for the price I've got zero complaints.

Things I would have changed:

I would have liked a co2 mag like the Umarex cp99, that would let me toss a grip sleeve on.

What others should know:

Do yourself a favor and pick up a cheap rear sight red dot plate and a red dot sight. You can go as cheap as you feel, it doesn't need to hold up to any recoil. I use the UTG RDM20 plate and a Pinty dot. Remove the grub screw on the rear sight, it slides out, slide the plate in and you're ready to go.

Rating 5.05.0 5.0

Rating 5.05.0 5.0

Rating 5.05.0 5.0

Things I liked:

Accurate representation of the M&P 45. Able to use UTG RDM20 mounting plate to put a red dot on the thing. Trigger is actually pretty good, with two distinct stages, the first where it's rotating the cylinder with the pellets, and a very crisp second stage break when it fires. As with any CO2 powered gun, the power does drop off pretty fast, especially when firing rapidly, but I am able to get around 96 shots off and maintain 8 shot, 1" to 1.5" groups at 25ft with cheap Crosman 7.4grn pellets before things start spreading out more.

Things I would have changed:

Better CO2 cartridge loading system.

What others should know:

As I am putting red dot sights on many of my firearms these days, I bought this as a pellet pistol to mount a cheap one and get more practice in. First setup was just sticking a Pinty pistol red dot on the flat top with double stick tape, but I found that the UTG mounting plate that is made for the firearm version which also works with the Pinty as it is setup like a Vortex for mounting.

Rating 5.05.0 5.0

Rating 5.05.0 5.0

Rating 5.05.0 5.0

Things I liked:

for the money you cant beat it . it is very accurate, and well made i have another one that i bought in 2002 and it is still shooting now i can go wyatt erpp

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  • Brian from USA asked:

    Does this have blowback action?

    • Huzpaza from USA asked:

      Will this take polymag shorts?

      • Mark from USA answered:

        It should . However the Polymags are very heavy for a CO2 pistol. They will not shoot very well.

    • Michaelangelo from USA asked:

      is this a blowback ?

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