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The official velocity of the SA177 air pistol is 380 fps. However, we tested it and found that it went as fast as 410 fps.

  • Umarex SA177 pistol
  • Semi-auto
  • 16-rd removable BB mag
  • Uses a 12-gram CO2 cartridge (in the grip)
  • Double-action only
  • Blowback action (metal slide)
  • Fixed sights (fiber optic rear, white dot front sight)
  • Weaver/Picatinny accessory rail
  • Textured grip with finger grooves
  • Realistic firearm appearance!


This pistol is a real miser when it comes to CO2! When we tested it, we routinely got 100 or more useful shots per 12-gram CO2 cartridge.
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other products by Umarex

Caliber0.177" (4.5mm)
Velocity410 fps
Loudness4-Medium-High
Barrel Length4.1"
Overall Length7.25"
Shot Capacity16
BarrelSmoothbore
Front SightBlade and Ramp
Rear SightFiber Optic
ScopeableNo
Suggested forPlinking/Fun
ActionSemiautomatic
SafetyManual
PowerplantCO2
FunctionRepeater
Trigger ActionDouble-action only
BlowbackYes
Max Shots per Fill100
Body TypePistol
Weight2.2 lbs
See manual

other products by Umarex

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3.0 3.0

4.0 4.0

By Evan from Canada on 2013-06-12
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Things I liked: Feel weight and realism

Things I would have changed: I would change the blow back system for sure, they should have made it real, (the blowback would put a bb in the chamber. all it is, is a co2 port facing backwards that meets up with a seal that is on the slide, so when you pull the trigger co2 puts a bb out the barrel and pushes back the slide from the back facing port. A little cheesy if you ask me. also the mag could have been designed better. the trigger pull is VERY hard.

What others should know: My gun that I had purchased must have been very poorly made. The seal for the blowback right away broke, and fell off. I glued it back on and it sort of worked. Another thing is the magazine, the top metal spring loaded peice that keeps the bbs in until they enter the chaber quickly wore down, so my bbs would fly every where one I released the spring at the bottom. I had also tried to fix that with superglue but only lasted a short time. My trigger was EXTREMLY hard and not consisntant.

5.0 5.0

5.0 5.0

4.0 4.0

By John from USA on 2012-11-19
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Verified Purchase

Things I liked: This is a very close feel to my Glock. I bought it specifically for that reason. I get close to a 100 or more shots out of one CO2. The sights are very good visibility on dark targets. The magazine is very easy and fast to load unlike other BB action pistols. Blowback is nice and strong.

Things I would have changed: Somehow get that trigger to be better. It is almost like a finger workout device! Luckily I think in some weird way it will help with a combat Glock trigger. I said I like the sights and I do, I just wish they would have made the front a fiber rod as well. The white plastic is a little lame. But I guess Glocks are normally three white dots. Also I wish the slide was a bit harder to rack. I think they get the blowback from the spring form the super heavy trigger and not necessarily the slide...hard to say.

What others should know: If you have Glocks and want something to train with buy this. The trigger is really the only real deterrant and that can be dealt with. It shoots a lot with one CO2 and is fast and pain free to load. All in all a great value

4.0 4.0

5.0 5.0

5.0 5.0

By Jessie from USA on 2012-10-11
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Things I liked: Very , Very accurate,nice blowback,good power, more than 100 rounds for co2 cartridge.

Things I would have changed: Front sight

What others should know: Slide lock after the last round, but the trigger still working.no spare mag available

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Item Description

UX-2252100 [PY-2045-4160]
Umarex SA177 BB Repeater
Caliber0.177" (4.5mm)
Max Velocity410 fps
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