The purpose of the delayer is to keep HopUp chamber open for a longer time. It is mounted on the piston gear. It fit without gluing or fasten. Just press it between pin and axle. This small device could solve your problems with the bullets feeding. For exmaple on high-speed guns. Made of nylon.
The RetroArms brand is based on the purely czech company Retro FACTORY s.r.o. Representatives of the company have experience with airsoft since 2001. In the beginning, the company was mainly a trading company, where the main activities were the design and commissioning of components for cooperation and assembly into functional units.
RetroArms does not compete with cheap chinese producers, but relies on the original design and high quality of manufactured parts.
Since 2013, it has a new production hall, CNC machine tools for machining complex components, a parts warehouse and a team of experienced workers and developers.
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