Hadron AAP-01 Short stroke bouncer kit with 300% nozzle return spring

Hadron Airsoft Designs

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AAP-01 Short stroke kit, including a Hadron Designs specific 300% upgraded spring.

We tested 150, 200, 230% variation springs with most leading buckings.. But our 300% gave 100% feeding consistency in most SS (shortstroke) applications. 

The shortstroke segment, is made from a bouncy material, effectivley taking the impact of the bolt, and bouncing it back. Hence why we nickname this kit, the "Bouncer".

This material property lessens the shock to the rear sight assembly.

Please note, there is a small solid tube as part of the segment, which is removed before fitting into the rear spring assembly. This small solid tube, and inserted into one end of the nozzle return spring, as per pictures. This is optional.

This provides a stiffening guide and tiny bumper for the nozzle spring assembly, when under full compression.

As used by numerous YouTube airsofters across the globe. Install, and welcome to the BRRRTTT.



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  • 5
    Hadron 300% spring nozzle aap-01

    Posted by David on 26th Mar 2022

    J’ai commandé ce ressort depuis la France car j’avais vu des review positive sur internet, au début je ne pensais pas que ça apporterait une grande différence avec un ressort 200% , finalement je me rend compte que ça change tout (surtout la cadence de tire). Je le conseil avec une full up grade pour éviter de casser le nozzle. Translated:- I ordered this spring from France because I had seen positive reviews on the internet, at first I did not think it would bring a big difference with a 200% spring, finally I realize that it changes everything (especially the pace of shooting). I recommend it with a full up grade to avoid breaking the nozzle.