Originally Posted by PropperJ
All right, what are the threads on the TPC and in the bolt? Want to use my old short TPC to make adjustable bolt for another old nel based marker.
I believe the threads on the inside of the bolt are 1/2 x 20. I was speaking with Mike about cleaning out the inside of a dirty bolt, and he said to run a 1/2 x 20 tap through it to clean out the threads.