Did not lock up correctly - TRYBE Defense Smith & Wesson M&P 9mm 4.25in M2.0 Match Grade Threaded Pistol Barrel

This is the second barrel I purchased from this manufacturer, and although the first one was very impressive, I must have gotten a bad one this go around, The chamber would not seat fully in the slide, I double checked all manufacturing numbers and I did order the correct barrel, but it would not fully go into battery and lock in place. Currently waiting on my refund as the product has been returned. I think I will purchase an OEM threaded barrel for this particular firearm in light of this.