Smith & Wesson M&P 45 CO2 Pistol

PY-2458-4930

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  • Description
  • Specifications
  • Customer reviews
  • Questions & Answers
  • 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.


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.
youTube video
See manual

other products by Smith & Wesson

Caliber0.177" (4.5mm)
Velocity370 fps
Loudness4-Medium-High
Barrel Length3.3"
Overall Length8.1"
Shot Capacity8
BarrelRifled
Front SightBlade and Ramp
Rear SightAdjustable for windage
ScopeableNo
Suggested forPlinking/Fun
ActionSemiautomatic
SafetyManual
PowerplantCO2
FunctionRepeater
Trigger ActionDouble-action and single-action
Body TypePistol
Weight1.35 lbs
See manual

other products by Smith & Wesson

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5.0 5.0

4.0 4.0

4.0 4.0

By Quincy from USA on 2015-08-16
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0.00 ratings

Things I liked: The M&P 45 feels good in the hand with a large grip that's easy on big hands or hands with long fingers. I like the weight and the grip angle makes for comfortable shooting. The bright tri-dot arrangement on the sights gives a great sight picture and awesome contrast when drawing a bead on your target. The adjustable rear sight is a plus in this price range and came in handy on my pistol. Yes, the trigger pull is a bit long but it's a smooth pull through the first stage and a crisp break in the second. The trigger pull is very easy to get feel for in this double-action handgun. If you're not firing at a quick pace you can pull the rear of the slid back to advance the clip and set the trigger into single-action mode. Accuracy is pretty darn good out to 30 feet and makes for a great plinker. At 15 feet I was getting sub 1" groups with Crosman Hollow Points. Makes for a not so serious seriously fun plinking pistol.

Things I would have changed: The trigger guard is tight and may be uncomfortable for some shooters. I have slim fingers so it doesn't bother me but this pistol will not shoot well with gloved hands. The CO2 screw tab is plastic and although it doesn't feel flimsy a metal one would be more reassuring. I have feed a few CO2 cartridges through this gun with ease so the tab may be a moot point. Loading the clips can be cumbersome and you can easily damage the cycling gear on the clips if you get frustrated or careless.

What others should know: You will need and want extra clips so order them now. I have a blast shooting this gun out to 20 yards plinking cans. It really gets bothersome having to reload just the one pellet clip and I never shoot BBs on my range so the plastic BB clip is a waste for me. This is not a 10m target pistol nor is it a realistic style blowback. This gun is a feel good in the hand can plinker that is seriously accurate enough to drop em out to 20 yards. Awesome gun for straight up plinking and all around fun.

2.0 2.0

5.0 5.0

4.0 4.0

By Keith from USA on 2015-05-23
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0.00 ratings

Things I liked: Looks very realistic. Weight and balance is good. This gun fits my hand perfectly and aims naturally. Accuracy is good. Adjustable rear sight is nice feature, but I did not need it. Shoots pellets and BBs. Price. Same platform as the more expensive Umarex mini revolvers at less than 1/3 the price.

Things I would have changed: Better QC.

What others should know: I returned three guns and had to give up. In the first one, both the pellet and BB magazines would jam and not advance - even when empty and after they were doused with oil. In the second one the magazine rotated freely and the DA trigger was smooth and light. Unfortunately it had about 50% less power than the first one, and about 2 out of 8 pellets would fail to discharge from the magazine. The third one was almost the perfect gun- smooth action, good power, very accurate. Unfortunately, there was a quirk in the cartridge seal. The 2 Umarex cartridges that came with the gun worked ok, but Crosman cartridges would not work. I probably could have modified the cartridge seal housing with a dremel, but could not bring myself to violate the warranty on a new gun. Not sure I made the right call. I think this would be a great gun and exceptional value if you get one that works.

5.0 5.0

5.0 5.0

5.0 5.0

By Randy from USA on 2015-04-19
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5.01 rating

Things I liked: Value-oriented gun. Hard to ding it for ANYTHING based on the price-to-quality ratio. Rifled barrel = very good accuracy at 25 feet (length of my basement range). I only use pellets -- read on another site that use of BB's in a rifled barrel will reduce life span. And yes, I do get an occasional jam, which is typically due to a loose-fitting pellet in the mag. It's a quick fix, and in my opinion doesn't warrant knocking a star -- or two -- off the rating. And I would agree that the double action pull takes some getting use to. But it's not intolerable, and when you can use single action, why worry about it? I'm slightly amused by those people that buy an air gun to try and simulate (for practice purposes) the actual weapon, and then give 1 star because it didn't do the job. C'mon, this gun can be purchased for as little as 40 bucks -- try and get a new M&P 45 ACP for under 600 bucks. Factor in the cost of operating the powder burner, and I don't know how anyone can complain.

Things I would have changed: Thumb screw for CO2 loading could be metal.

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Item Description

In stockSW-2255060 [PY-2458-4930]
S&W M&P 45, incl. 8-rd pellet clip & 8-rd BB clip
Caliber0.177" (4.5mm)
Max Velocity370 fps
StockSynthetic
GripAmbi
ColorBlack

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