Cryostructure Posted September 6, 2024 Report Share Posted September 6, 2024 HK21 Reinforcement Rails High strength 1045 steel CNC machined from a single piece of billet material to a precise fit with added interior radii to increase strength in critical areas to exceed HK standards. No shortcuts, like welding with other versions. The added interior radius to the cut gives it additional hidden strength because there is not a 90 degree angle to fracture at the intersection. These are best in price and class on the market. Perfect for the newly imported HK21 build kits. These are in-stock inventory and ship same day. https://www.cryostructure.com/product/hk21-reinforcement-rails/ Quote Link to comment Share on other sites More sharing options...
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