What are the 4 holes on top for?

[scr903]

I just got my tac 15i in about 2 weeks ago. its awesome. hha installed yesterday. looking for the right rest. should i wait for aerorest or is there better ones out there? also what are the 4 holes that are threaded on top of the prod assembly for? i have been reading all these post for a couple of months and yall have the most info i can find and sold me on my tac.

 

[jon.henry755]

Hi scr903,
If anybody might be able to answer your question I'd suspect it might be Len Backus o his son Andy, since they have ties directly to PSE.

In all the time I've owned mine, I've never found a use for the holes that you're describing.

Regards,

Jon