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Posted: 8/31/2004 9:09:17 PM EST
Since there is no FFL near me, I am going to build my own lower. The lower is on its way but I am still looking for the best drill jig and the pitch and thread so i can tap the stock hole in the lower. Anyone know?
Link Posted: 9/1/2004 5:50:44 AM EST
I am pretty sure that you step up in size until you plunge cut with a 1 and an 1/8th inch end mill and then thread 1 3/16 by 13 or is it 16 tpi?

Just look around the net. There is a blue print over at biggerhammer.net
Link Posted: 9/1/2004 7:26:41 AM EST
1 3/16 16 tpi, drill 1 1/8"
Link Posted: 9/1/2004 12:12:15 PM EST
[Last Edit: 9/1/2004 12:19:28 PM EST by Lon_Moer]
William from the Tannery Shop is a member here, and has all you will need.

Also, check this thread; BIY lower build sites
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