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Author Topic: AK Barrel Pin Options  (Read 3603 times)

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Dale99

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AK Barrel Pin Options
« on: May 18, 2018, 01:31:39 PM »
In the past, I have used .302 (oversized) barrel pins. I usually drill with a 7mm drill, and then use a reamer to .300. Then press fit the .302 pin.

If I were to use an original barrel pin, which I believe is .277, what size drill and reamer should I use? What have you experiences been with this?

Thanks,
Dale
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Danjal

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Re: AK Barrel Pin Options
« Reply #1 on: May 18, 2018, 10:16:59 PM »
Size J bits are .277" I'd recommend under sizing it and reaming it out by 2-3% (.271"), which is the standard to leave. A size I (.272") is just about spot on for it, or the next smaller fractional size is 17/64 (.2656"). The reamer would be to size J (.277")

Keep in mind that drills/reamers don't cut exactly straight and usually leave a hole a couple of thou oversize. Like a 1/4" bit leaves a .251-.252" hole. That'll give you plenty to work with.

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Dale99

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Re: AK Barrel Pin Options
« Reply #2 on: May 19, 2018, 09:58:15 PM »
Big Thanks Danjal!

You are the "go-to" guy!
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