Tac 15i lighted nock accessories

[parashooter]

I went to the firenock site to order some nock batteries and lights and they have several different types D, Q, C, A, etc.
So which nock is the one for the Tac 15i that they sell on this site?

 

[Dorge]

I went to the firenock site to order some nock batteries and lights and they have several different types D, Q, C, A, etc.
So which nock is the one for the Tac 15i that they sell on this site?

D style nock is what you need.
Q is for parker and Scorpyd
C is for more universal nock
A is for axis...