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In this Table Top Review, we’re taking a detailed look at the KJ Works KP-19S CO2 Blowback Airsoft Pistol. I’ve already reviewed the standard KP-19 in the past, and while the two pistols share a lot in common, there are some important differences between the KP-19 and the KP-19S that are worth covering.

I’m not entirely sure what the “S” officially stands for, possibly Sport—but interestingly, I’d actually argue that the non-S KP-19 is the more competition-oriented version, especially for IPSC-style Airsoft shooting. That said, the KP-19S still offers excellent performance, strong build quality, and a feature-rich design.

As always, this is a Table Top Review only. A full Shooting / Field Test Video will follow later.

This pistol is currently available in our Canada Replica Airguns store, and if a similar model is available in the US store, links will be provided in the video description.

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Specifications:

• Manufacturer: KJ Works

• Made In: Taiwan

• Power Source: 12g CO2

• Ammunition: 6mm Airsoft BBs

• Action: Semi-auto, full blowback

• Trigger: Single-action, skeletonized, adjustable (1911-style)

• Magazine: Full-size dropout metal magazine, 25-round capacity

• Weight: 1.96 lbs (890 g)

• Overall Length: 9.84 inches (250 mm)

• Inner Barrel Length: 4.25 inches (108 mm)

• Claimed Velocity: 366+ FPS

• Hop-Up: Adjustable

• Rail: Under-barrel Picatinny rail

• Sights: Fiber-optic front and rear

• Safety: Ambidextrous

• Magazine Release: Reversible

• Threaded Barrel: Inner and outer threading

• Field Strippable: Yes (1911-style takedown)

The pistol includes a removable inner barrel extension, which may be required to reach the higher advertised FPS—something we’ll confirm in the upcoming field test.

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In the Box:

• KP-19S CO2 Blowback Airsoft Pistol

• Full-size metal CO2 magazine

• Inner barrel extension

• Allen keys

• Small bag of Airsoft BBs

• Instruction manual (Usually!)

The pistol comes packaged in a basic cardboard box, but all essential accessories are included.

KP-19 vs KP-19S – What’s Different?

The KP-19S shares most of its core design with the standard KP-19:

• Same frame, grip, slide profile, trigger guard

• Same skeletonized trigger and hammer

• Same magazine compatibility

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Key Differences

• KP-19 (Non-S):

  • Flared magwell

  • Compensator

  • Removable rear plate for mounting a red dot

  • More competition-oriented configuration

• KP-19S:

  • No flared magwell (cleaner, more streamlined look)

  • Fixed rear sight

  • Two-tone appearance

Performance between the two should be nearly identical, and if you’ve already watched the field test for the standard KP-19, expect similar results from the S version.

Walk-Around & Handling:

The KP-19S is a large pistol with a fairly wide grip. Shooters with smaller hands may find it bulky, but balance and weight distribution are excellent. At just under two pounds, it feels solid without being overly heavy.

Notable features include:

• Slide cutouts on the top and sides

• CNC-style gold/brass-colored fluted barrel visible through the slide

• Fiber-optic sights that are extremely easy to pick up

• Ambidextrous safety

• Reversible magazine release

• Dual threaded barrel system (inner and outer threads)

The full blowback action is strong, crisp, and satisfying, with excellent slide movement and reset.

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Field Strip:

Field stripping follows a classic 1911 takedown:

1. Align the slide notch

2. Push out the takedown pin

3. Remove the slide assembly

Once opened, you gain easy access to:

• Inner barrel

• Recoil spring

• Hop-up adjustment wheel

Reassembly is quick and straightforward, making cleaning and maintenance easy.

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Pros:

• High metal content with excellent weight and balance

• Strong, realistic full blowback action

• Excellent fit and finish typical of KJ Works pistols

• High-capacity 25-round metal magazine

• CO2 or gas compatibility (with appropriate magazines)

• Dual threaded barrel for accessories and extensions

• Bright fiber-optic sights (easy to acquire on any background)

• Short, light, adjustable 1911-style trigger

• Ambidextrous safety and reversible mag release

• Easy field stripping and hop-up access

Cons:

• Grip is wide and may not suit shooters with smaller hands

• Higher price point compared to similar KWC 1911 models

• Rear sight is not adjustable and does not accept a red-dot plate

  • Optics would need to be rail-mounted from underneath

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Final Thoughts:

The KJ Works KP-19S is a high-quality, full-featured CO2 blowback Airsoft pistol with excellent build quality, strong recoil, and competition-inspired styling. While it lacks some of the modular competition features of the KP-19 non-s version, it offers a cleaner, streamlined look and the same reliable performance.

If you’re looking for a quality CO2 Airsoft pistol with a fantastic trigger, solid blowback, and premium construction, the KP-19S is a strong contender.

A full shooting and field test video will be coming soon.

Where to Buy:

🇨🇦 Canada:
https://www.replicaairguns.ca/kp-19s-hi-capa-gbb-airsoft-pistol

🇺🇸 United States:
https://www.replicaairguns.us
(A similar model may be linked if the KP-19S is not currently available)

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More Reviews & Articles

Visit our blog for written reviews, photos, and additional info:
https://www.replicaairguns.com

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Type: BB Pistol.
Manufacturer: Sig Sauer
Model: 1911 Emperor Scorpion.
Materials: Mostly all metal build.
Weight: 2.1 pounds (953 Grams).
Barrel: 4.3 inches (109.2mm) - Non-rifled.
Propulsion: 12 gram CO2.
Action: Blowback single action only.
Ammunition Type: 4.5mm Steel BB's.
Ammunition Capacity: 16 round full size drop out metal magazine.
Max FPS: 300+.

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Trigger Pull: The Single action only trigger pull on the Sig Sauer 1911 Emperor Scorpion Blowback CO2 BB Pistol is typical of what you will find on a KWC Blowback 1911, and that’s a good thing since it is short light and crisp similar to a real 1911 semi auto pistol.

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Accuracy: I haven’t done my official field test shooting video so I can not comment exactly on how well this version of the KWC 1911 series will perform, but since I havre reviewed many similar versions of the KWC 1911, it should shoot similarly. That said I hope to expect a velocity around 300-330 fps and a 10 shot grouping between 1.5 and 2.5 inches.

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Build Quality: The Sig Sauer 1911 Emperor Scorpion Blowback CO2 BB Pistol like the other KWC 1911 Blowback BB Pistols has in a sense been perfected over time as the Original Tanfoglio Witness 1911 I Review came out over a decade ago and although it did have a few problems at first with the safety it all got worked out in the end and versions today are well made and reliable. As with all Airguns the metals used are not firearms grade quality so you do need to be a bit more careful with them but if you do you will get years of use out of them.

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Realism: The Sig Sauer 1911 Emperor Scorpion Blowback CO2 BB Pistol is a lsenced replica of the real steel Sig Sauer 1911 Emperor Scorpion 45 ACP and from looking at photos on line or the Sig Sauer 45 APC version it is virtually identical in a appearance other than the hammer which on the 45 ACP version seems to have a larger and more oval skeletonized opening. That’s pretty minor in the scheme of things. As this is a full blowback Air Pistol, the mechanical functions mimic the real steal version very well and as expected you can even fully field strip this BB Pistol.

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Pros:

• Based on the tried and true KWC 1911. Most parts should be mix and match.

• Full blowback operation.

• Excellent SAO 1911 trigger as expected.

• Full metal construction, has great realistic weight to it.

• Easy to see white dot sights front and back.

• Tactical with ambidextrous safety controls.

• Rail for adding on accessories like a laser or Tac light.

• Nice reassessed barrel ads to the realism.

• Love the two tone color scheme.

• Full Sig Sauer licensing.

• Looks virtually identical to the real steel Sig Sauer 1911 Emperor Scorpion..

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Cons:

• Will go through CO2 fairly quickly.

• Lower fps because of full blowback operation.

• Sights are none adjustable.

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Comments:
Every time a new Blowback 1911 Airgun comes out I seem to say this one is my new favorite and well here we go again… Not only do I like 1911’s I also really like Sigs. I also seem to be a fan of town tone guns as it makes the parts on the gun really stand out in contrast to each other and I like that look. So when you put all of these things together it makes for a real winner in my books. With so many Blowback 1911 choices out there it is hard to make up ones mind, I would consider the Sig Sauer 1911 Emperor Scorpion Blowback CO2 BB Pistol to be in the top 3 for sure!

• Buy the Sig Sauer 1911 Emperor Scorpion Blowback CO2 BB Pistol in Canada

• Buy the Sig Sauer 1911 Emperor Scorpion Blowback CO2 BB Pistol in the US