M15 flat gasket copper washers

$5 shipped each (letter mail)

ID 15mm, OD 17mm, 1.5mm thick

I use 1 of these as a crush washer with a Sako conical muzzle brake on my CZ 600 Alpha 6.5 creedmore (M15x1 thread). Works great. 

End of Alpha barrel is ~18mm diameter. Start of Sako conical brake is ~16mm diameter. So 17mm was a happy medium between the 2.