User Panel
User Panel
User Panel
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Posted: 11/15/2015 9:00:03 AM EDT
[#1]
AR prototypes?
If so, I think it was .575 forward of the FSB. May be wrong. And I believe Stoner was experimenting with aluminum-wrapped barrels as well. Very thin steel barrel shrouded in aluminum. |
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Posted: 11/15/2015 11:35:26 AM EDT
[#2]
Quoting the December 1958 report from Aberdeen:
"The barrel has 8 flutes 9-1/2 inches long at the rear of the front sight shoulder. The barrel has a diameter of 0.593 inch (rifle number 18) at the front sight position and a diameter of 0.560 inch at the muzzle. A 6 inch length starting 3/4 inch from the muzzle muzzle has a diameter of 0.472 inch." So, basically, you have a .560 muzzle diameter for 3/4, it steps down to .472 for 6 inches, the steps up to .593 under the FSB. |
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Posted: 11/15/2015 6:39:15 PM EDT
[#3]
I'm certain my proto fsb is .625 so it'll stay that under fsb, but taper down from there. I'm thinking .525. Thanks for the info, guys!
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Posted: 11/17/2015 9:08:44 AM EDT
[#4]
Anyone have a diagram or drawing with measurements?
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Posted: 11/28/2015 9:53:42 PM EDT
[#5]
Blueprint?
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