After meticulously hand tuning M-nubs from silicone rubbers, silicone foams and shaving them to just the right angle. Around in 2019, 3d Printers became so accurate, reaching accuracy of +/- 0.05mm, more accurate then injection molded components. We were able to bring to you, precision grade plastic components at a lower cost. Many of these hopup units underwent extensive revisions, often making adjustments of 0.05mm, or angles less than 1 degree just to get the arm "perfect"
These arms, all feature the same concept.
Each package includes 2x hopup Arms.
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