BigJoe365 Posted November 4, 2020 Share Posted November 4, 2020 I am installing a TTI bolt release and find myself without the required tools. …I have 4-40 tap, need 5-40 tap. same scenario with the drill bit. however I did start with a small pilot hole first. I ordered the tap and drill bit on amazon as nobody local had it on the shelf. I have a ton of tap & die and 2 tons of drill bits...none the right ones.. If I am to invest into more of both, what do you Gunsmiths recommend. primarily the drill bits. before ya say it, Yes I know about the no drilling bolt release assembly. I just like to be difficult LOL. Hey thank you for any input. Quote Link to comment Share on other sites More sharing options...
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