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AR15.COM
3/29/2013 11:04:50 AM EDT
Can someone with a threaded M&P 9mm barrel do me a favor and measure the length and outside diameter of the thread protector?  Preferably with a caliper, I'm working with hundredths.

Thanks!

ETA: Looks like the barrel threads are 0.475" in length, which would need a 0.5" thread protector.
3/30/2013 8:53:02 AM EDT
[#1]
The thread protector on my 1/2x28 S&W M&P 9 barrel is .460" in length with an OD of .602" on my dial caliper.