couture Posted October 31, 2022 Report Share Posted October 31, 2022 Is the twist rate of an AR stamped on the barrel? If not how do I find out what it is? Quote Link to comment Share on other sites More sharing options...
Albroswift Posted October 31, 2022 Report Share Posted October 31, 2022 If it is not stamped on the barrel (which it usually is) you can put a cleaning rod in with enough cleaning pad so tight fit, ark it with a sharpie, then measure how far it needs to move to make 1 full rotation. Or 1/2 rotation and double, etc. If it moves 5" to make 1/2 rotation or 10" to make full rotation you have 1:10. Quote Link to comment Share on other sites More sharing options...
JMJ Posted October 31, 2022 Report Share Posted October 31, 2022 2 hours ago, Albroswift said: If it is not stamped on the barrel (which it usually is) you can put a cleaning rod in with enough cleaning pad so tight fit, ark it with a sharpie, then measure how far it needs to move to make 1 full rotation. Or 1/2 rotation and double, etc. If it moves 5" to make 1/2 rotation or 10" to make full rotation you have 1:10. Thanks for posting this! That’s a whole lot easier than “slugging” a barrel to determine the twist rate. Quote Link to comment Share on other sites More sharing options...
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