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There is a lot of superstition surrounding the number 13, but KJ Works ignores this by naming its replica KP13. It moves away from known handgun designs such as Colt, Sig or CZ and offers something new. What we liked: The design, as it is different from what we've seen hundreds of times; the blowback, pure power especially when using the CO2 magazine; and its grey colour, is grey trendy now?

The weight of power

Why is the material of the slide important? Simply because it's heavier as it is made of metal (250g out of the total 770g) and that the mass moved in each shot provides a stronger blowback feeling. And few things we players like more than feeling the kickback power when firing. Something that makes KJ Works clearly stand out from other Japanese brands, also very popular, which use plastic.


When shooting with a handgun we often do so intuitively, not really using the aiming systems. But the front optical-fibre sight are welcome, as it helps us to capture more light to highlight the line of fire and lets us aim more easily without having to focus the eyes on the sights. So aiming becomes easier, and we would be the only ones to blame if we miss the shot.

The present is grey, the future black and tan

The frame, unlike the slide, is made of plastic composite that lightens the whole set, with a finish that emulates a non-slip texture but that is purely aesthetic, so it might be better to use "sniper tape". Initially the gun will be available in grey, but in a near future it will also be released in TAN and black, according to KJ Works.

Hold me tight

This design includes areas marked to help place your hands. There are many theories and practices when it comes to holding the gun, but you can find marks for the most common ones. And as the design of the body is symmetrical you can find the same marks whether you are left or right handed.

Two stage trigger

This system inside the trigger is a kind of small trigger that functions as trigger safety. Unless you pull this second lever the main one cannot be fired, something you should not worry about because both will be pulled consecutively in the same movement with a firm grip. But it works well to prevent accidents.

Beware of the measures

When measuring the performance of a GBB there are certain parameters such as temperature, type of gas, fire rate that come first ... just to be able to make a fair comparison. We have tested this gun with gas and CO2 magazines and this is the data we’ve collected:

Test conditions:
-          22.5 °C room temperature
-          Green gas Duel Code/CO2 12g Duel Code
-          Fire rate: 2 seconds between shots and 20-30 seconds to reload.
-          CO2: 78 disparos de media (4 cargadores)

-          Gas: Average of 311 FPS in 10 shots (315 FPS maximum power, 301 FPS minimum power)
-          CO2: Average of 316 FPS in 10 shots (331 FPS maximum power, 301 FPS minimum power)

Autonomy of gas load:
-          Gas: 36 shots on average (2 magazines)
-          CO2: 78 shots on average (4 magazines)

The wheel of fortune

The hop-up design is a vertical wheel under the hop chamber, a classic TM that we have seen in other KJs such as the KP-11 or the KP-01. Our experience with this hop design has been outstanding, setting it at the minimum we recorded a straight 30 metres flight with 0.20g BBs. If we add more hop or increase the weight of the BBs we can get other results, but you will rarely have to shoot at more than 30 meters with your sidearm.

What's next?

If you take a look at the KP13 magazine you can figure out what the long-awaited releases will be by the Taiwanese manufacturer KJ Works.