bigboy69 Posted October 19, 2018 Share Posted October 19, 2018 I would like to drill holes in the back of my magazines to show when I have 10 rounds in the mag, for steel shooting and steel challenge. Did anyone do this? Or the people that have the new STI mags, can you tell me what qty the window holes are at and measurements so I can drill my own??? Link to comment Share on other sites More sharing options...
Sarge Posted October 19, 2018 Share Posted October 19, 2018 I think Bobby At FGW used to have a video that showed how to measure and drill holes. Link to comment Share on other sites More sharing options...
bigboy69 Posted October 19, 2018 Author Share Posted October 19, 2018 1 hour ago, Sarge said: I think Bobby At FGW used to have a video that showed how to measure and drill holes. I'm drawing a blank... Bobby, FGW??? What is FGW? Link to comment Share on other sites More sharing options...
Sarge Posted October 19, 2018 Share Posted October 19, 2018 16 minutes ago, bigboy69 said: I'm drawing a blank... Bobby, FGW??? What is FGW? Freedom Gunworks. Bobby Keigans Link to comment Share on other sites More sharing options...
Glk21C Posted October 19, 2018 Share Posted October 19, 2018 8 hours ago, bigboy69 said: I would like to drill holes in the back of my magazines to show when I have 10 rounds in the mag, for steel shooting and steel challenge. Did anyone do this? Or the people that have the new STI mags, can you tell me what qty the window holes are at and measurements so I can drill my own??? I've done it, all depends on the guts inside your tubes. Plus you really need a drill press that can be adjusted to a really slow speed in order to drill the stainless tubes and NOT burn up your, what should already be, sharp drill bits. Or of course, bore them using a mill. I've also heard the holes in the back of the newer STI tubes are not accurate in their location. I've only heard that, have not witnessed it myself. Don, if you want to give me a pm with your phone number and I'll give you a shout next week. Link to comment Share on other sites More sharing options...
LMS Posted October 20, 2018 Share Posted October 20, 2018 I did it, and you do need a drill press and the right drills. You'll also need to put some wood inside the mag to support it. The whole thing is not terribly difficult. Link to comment Share on other sites More sharing options...
joelpend Posted October 23, 2018 Share Posted October 23, 2018 You could stack 10 rounds in there, turn upside down, remove basepad/spring/follower and measure to the first round to determine where the hole should be. Wouln't you need another hole to make sure you don't have 11 rounds in the mag? Link to comment Share on other sites More sharing options...
bigboy69 Posted October 24, 2018 Author Share Posted October 24, 2018 21 hours ago, joelpend said: You could stack 10 rounds in there, turn upside down, remove basepad/spring/follower and measure to the first round to determine where the hole should be. Wouln't you need another hole to make sure you don't have 11 rounds in the mag? HaHa its just to make sure I got 10 in my mag when I shoot steel challenge Link to comment Share on other sites More sharing options...
Moloch38 Posted October 31, 2018 Share Posted October 31, 2018 The new Atlas tuned STI mags have reference holes in them. Link to comment Share on other sites More sharing options...
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