U Style Firenock Replacement Nock (7/14/100)

The "U" style nock was developed to fit railed crossbows with a 0.131" to 0.137" center serving, and non-railed crossbows with a 0.137" to 0.142" center serving, arrows with a 0.300" ID, and triggers / anti-dry-fire (ADF) systems that require a short-pronged design.

Available in 18 colors / shades (3 nock colors x 6 LED colors)

Full system, on average, weighs only ~31 grains

• Ready for the only target lighted nock system that is IBO & ASA approved: Firenock “T” circuit

• Ready for hunting and intermittent lighted nock systems that stay lit / blink for up to 21 days with a BL battery powering a Firenock “H” / “I” red circuit