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Yes this is for a full size p320. Thread pitch is 13.5x1mm LH. Copy and paste from the manufacturer- "New OEM Sig Sauer P320 5.5" threaded barrel chambered in 9mm, CIP standard. 13.5x1mm LH threads. Sig Sauer factory replacement barrel for Sig P320 Full Size. Sig barrels are designed to ensure the accuracy and longevity of you Sig Sauer firearm. The barrels are specially heat-treated for toughness and durability. This barrel features a threaded muzzle to accept a suppressor. Thread protector is included."
Ian, yes It is for the Full Size p320 and is threaded 13.5x1mm LH. There are adapters for the more common 1/2 x 28 muzzle devices : https://www.downrangeproductsco.com/product/metric-thread-adapter-13-5x1-left-hand-to-1-2x28-4196/
it is for the full size p320and has 13.5x1mm LH thread
Ian, yes it is full size. The threaded pitch is 13.5x1mm LH. Have a great day!
