KJ Works KP-19S Hi-Capa GBB Airsoft Pistol

Manufacturer: KJ Works.
Made In: Taiwan
Power Source: 12 gram CO2.
Ammunition: 6mm Plastic Airsoft BB's.
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)

Buy the Ammo

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

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.

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.

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

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.