👉 Steel bushings are made from high-quality stainless steel 420F with a hardness of HRC42-50 and are precisely machined on CNC machines. This gives them high accuracy with a tolerance of 0.05mm, a smooth blackened surface, and long service life. They are designed to withstand even strong M150 springs and higher, with extreme rates of fire.
👉 For maximum assembly durability, we always recommend replacing ball bearings with bushings instead of ball bearings. JVAN bearings feature internal grooves that significantly reduce friction compared to standard bushings, while also retaining lubricant for smoother operation.
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