The FN 510 MRD Holosun is engineered for exceptional performance with a 4.1" barrel featuring a 1-in-16" twist rate to ensure superior accuracy. Its robust flat dark earth polymer frame and striker-fired action provide a lightweight yet durable construction. This model comes equipped with a Holosun 407C sight, delivering quick and reliable target acquisition, and the MRD Optics Ready Slide for easy optics integration.