Add to Cart Compare Quick view 13/16-16 to 3/4 NPT Thread Adapter MSRP: Now: $30.00 Was: For those who have one of our Infinite Muzzle Brakes or oil filter adapters which feature 13/16-16 external threads, this adapter is designed to convert your muzzle or accessory's threads to 3/4 NPT thread. Inner Thread: 13/16-16 Outer Thread:... MSRP: Now: $30.00 Was: Add to Cart Compare Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $30.00 Was: Subtotal: Add to Cart