Apex Tactical Specialties has expanded its aftermarket upgrade options for the FN 509 series of pistols with the addition of a new curved trigger version of its popular Action Enhancement Kit. The new ...

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After initially selling out at introduction due to strong consumer demand, Apex Tactical Specialties’ new Action Enhancement Kit in FDE for the FN 509 model pistols is back in stock and shipping.

While the Peoria, Arizona-based parts-maker known for its innovative work transforming striker-fired trigger systems had previously announced the product for M2.0 models, the kit actually went on sale ...