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Posted: 5/3/2026 11:18:47 AM EDT
| I screwed up while installing a different pistol grip on my Colt M4 lower. Does anyone know the thread size so I can get a thread tap ? |
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OK, USA
| Most of mine me are drilled through, but not all of them are tapped all the way through. I would send the tap all the way through the hole and if necessary get a slightly longer 1/4-28 screw to reach past the damaged threads and into the newly cut ones. Just make sure the screw doesn't come all the way through. |
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